[Q] Sudden battery drain problem - Samsung Infuse 4G

I have an Infuse that I got a little over two years ago. It started out with Froyo and I installed the official Gingerbread update after using the phone for a while. Long story short, I will need to keep it for a while yet so I can't just upgrade through my carrier (AT&T).
Here's my problem. A few months ago, I very abruptly had a battery problem. One day I had a normal recharge/discharge cycle in terms of how long the battery lasted (usually around 60% remaining when I plugged it in at night), and the next day the entire battery was drained in less than 14 hours. I typically leave it plugged in at work now, whereas before I could go for almost two days without needing to charge. Nothing changed in how much I used it. I had not installed any new programs.
I want to try to fix this phone before forking over money for a new one. Does anyone have an idea of what is going on here? Looking at my battery usage stats, "cell standby" seems to be in 1st or 2nd place for battery drain, depending on how much the screen has been on (with typical use for me, "display" is usually #1, but if I've not checked my messages or email much, that drops down to 2nd-4th place with cell standby at the top). I'm not sure if that info is of any help.
Someone told me recently that he had a similar problem with a (different) older phone, and someone had told him that some of the older technology in the towers was being phased out and the phone was draining its battery looking for a signal that wasn't as strong anymore due to there being fewer towers it could get a signal from. Is that true?
Thanks to whoever can give me any assistance. If you need more info please ask.

QuantaFille said:
I have an Infuse that I got a little over two years ago. It started out with Froyo and I installed the official Gingerbread update after using the phone for a while. Long story short, I will need to keep it for a while yet so I can't just upgrade through my carrier (AT&T).
Here's my problem. A few months ago, I very abruptly had a battery problem. One day I had a normal recharge/discharge cycle in terms of how long the battery lasted (usually around 60% remaining when I plugged it in at night), and the next day the entire battery was drained in less than 14 hours. I typically leave it plugged in at work now, whereas before I could go for almost two days without needing to charge. Nothing changed in how much I used it. I had not installed any new programs.
I want to try to fix this phone before forking over money for a new one. Does anyone have an idea of what is going on here? Looking at my battery usage stats, "cell standby" seems to be in 1st or 2nd place for battery drain, depending on how much the screen has been on (with typical use for me, "display" is usually #1, but if I've not checked my messages or email much, that drops down to 2nd-4th place with cell standby at the top). I'm not sure if that info is of any help.
Someone told me recently that he had a similar problem with a (different) older phone, and someone had told him that some of the older technology in the towers was being phased out and the phone was draining its battery looking for a signal that wasn't as strong anymore due to there being fewer towers it could get a signal from. Is that true?
Thanks to whoever can give me any assistance. If you need more info please ask.
Click to expand...
Click to collapse
Lets rule out any obvious culprit by installing Wakelock Detector, and letting it run until the battery becomes low (then post the stats). There may be an app that stands out.
I have a similar issue with my current phone. It is sporadic, and I think it is a process within Android Services that came with Fly-On Mod (once a week I have bad battery but a reboot fixes it, only discovered it after installing Fly-On). Haven't bothered removing it yet because a latest ROM update seems imminent and I would rather wait for that if I'm wiping everything.

Related

[Q] defective device or battery

friends and gurus
i need your help in deciding if something is wrong with my sensation 4g or is it something else i am doing. the main issue is that battery life sucks. the first sensation i got also had the similar issue, and i exchanged it for the new one. but i have the same issue. i have went thru at least four cycle of draining the battery and then charging it up. also did the battery calibration. i haven't rooted the phone. just using go launcher ex instead of sense in hope of getting more battery life. so, now my question is is it just my bad luck with sensation? should i try one more time in exchanging device with t-mobile or should i go with HTC service?
will appreciate any help.
this is a detailed log of today's observation.
HTC battery level
took of from charger : 5:00 AM
7:00 AM 89% --browsed net for 10 mins, checked emails
-- played music for 5 mins
10:00 AM 50% -- made two calls total 5 mins, recved two calls total two mins
11:18 AM 36% -- played game for 5 mins, checked email couple of times
11:44 AM 33% -- call of 1 min
12:37 pm 25% -- no use
01:17 PM 15% -- placed a two min call.
02:00 PM 14% -- at 15% phone went into power saver mode and it turned off wifi as well as mobile data.
02:40 PM 5% -- now can't wait, plugged into charger :-(
what is using battery
display 47%
cell standby 14%
phone ideal 12%
voice calls 12%
wifi 11%
internet 3%
bluetooth 1%
what is running on the phone
stock mail client -- one work email
gmail -- one personal account
juice defender
go launcher ex
sense clock widget
go weather widge (no auto update, update when opened)
wifi -- on
4g mobile network -- off
bluetooth -- off
GPS -- off
It is easily one of the two... Try factory reseting the phone if that has no effect, id just return for a replacement
You could also s-off your phone and look into some of the roms in your region, could also be helpful :|
http://forum.xda-developers.com/forumdisplay.php?f=1112
With my phone personally...if i charge phone to full at 5am..its full at 7am
(Currently using Stock Rom/Kernel used ADB to pause applications runs like a champ!)
Best of luck with your issue
thanks for your reply. but why it need factory reset? i got phone just a week ago. i have installed few apps like unblock me game, juice defender, battery calibration, volume control+
(underpower speaker is another issue). , google maps, go weahter, go laucher.
the phone i have is made in china and manufacturing date is 7/2011.
s-off phone will void warranty, so i will wait till warranty period is over.
KrisHilbun said:
It is easily one of the two... Get phone replaced again if you can... If not just buy a replacement battery, could do the trick..
http://goo.gl/qzm9U
You could also s-off your phone and look into some of the roms in your region, could also be helpful :|
http://forum.xda-developers.com/forumdisplay.php?f=1112
With my phone personally...if i charge phone to full at 5am..its full at 7am
(Currently using Stock Rom/Kernel used ADB to pause applications runs like a champ!)
Best of luck with your issue
Edit; Have you tried a factory reset? Could be worth a shot aswell
Click to expand...
Click to collapse
snap!
seems to me that your getting pretty much the same use from your battery that i am. i had the htc desire prior to the sensation and to be honest the battery life is comparable. i was expecting the sensation to be better battery wise but but i guess duel core is desire on speed so will use more power sucks though, i just plug phone into charger every night. don't think changing the phone is gona help.....battery life on htc is just bad. maybe buy a backup/second battery.
i will be more than happy if i have to charge phone just once a day. it drains out by 3:00 pm, then it is a real issue. That too without any long calls. i am sure, if i talk for one hour, then battery will die on spot.
the usage of today is in fact much less than some busy day. i am inside my office so have used landline/ skype for calls. if i have to be outside my office, then it gonna be a problem.
on a side note, what good alternative to sensation is there with T-mobile USA? i have seen some amazing battery life with iphone 4g and motoroal defy. and my own blackberry could go on for two days without a need to charge.
figleaf said:
seems to me that your getting pretty much the same use from your battery that i am. i had the htc desire prior to the sensation and to be honest the battery life is comparable. i was expecting the sensation to be better battery wise but but i guess duel core is desire on speed so will use more power sucks though, i just plug phone into charger every night. don't think changing the phone is gona help.....battery life on htc is just bad. maybe buy a backup/second battery.
Click to expand...
Click to collapse
I too have been very frustrated with battery drainage. But for me, it didn't get bad until after I flashed modified ROMs. And I am not ignorant to flashing ROMs and I have done everything I can to find out the battery problem (battery calibration, bump charging, proper RIL files etc). But I can not get more than 8 hours in a day for any ROM. And these ROMs proclaim to be better on battery usage.
When I was on stock, I was getting 24 hours with moderate usage.
The thing I do not understand is that some people brag about their good battery usage and others with the same ROM are getting bad drainage. There are so many variables to battery drainage that trying to understand the problem proves difficult.
So I am just as dumbfounded as you.
abachhan75 said:
what is running on the phone
stock mail client -- one work email
gmail -- one personal account
juice defender
go launcher ex
sense clock widget
go weather widge (no auto update, update when opened)
wifi -- on
4g mobile network -- off
bluetooth -- off
GPS -- off
Click to expand...
Click to collapse
How often does the mail client poll for new mail?
Do you leave your wifi on all the time? And if you do is it always connected, or just on and sometimes connected? When its on but not connected it will scan for available connections very frequently causing drain.
How is the is the mobile service in the places where you spend most of your time? If you spend a lot of time in places where the reception is poor then anytime you have no service the phone will search for service causing drain.
moto211 said:
How often does the mail client poll for new mail?
Do you leave your wifi on all the time? And if you do is it always connected, or just on and sometimes connected? When its on but not connected it will scan for available connections very frequently causing drain.
How is the is the mobile service in the places where you spend most of your time? If you spend a lot of time in places where the reception is poor then anytime you have no service the phone will search for service causing drain.
Click to expand...
Click to collapse
I am next to router all the time . As for mobile signal I usually get 3 to 4 bars. Email client is push gmail client as my company is using Google business app. Even if I dnt use the phone, it drains about 5% battery. If I use moderatly then all bets are off.
Since I have a similar battery problem and have done hours and hours of research including testing various ROMs, I think the answer to this strange behaviour (some people with good battery life, some without) is indicated by TechRadar's Sensation review:
UPDATE: We've finally managed to get our hands on a new review model of the HTC Sensation, and the good news is the battery life is definitely improved.
It seems that a combination of data-hungry applications and a slightly dodgy model caused the odd readings from before, although we're not entirely convinced the above scenario isn't one power users will face, which is why we've left it in.
But in normal use, and by that we mean sending 42 texts, spending 49 mins on the phone, watching an hour and bit of video and using the music player constantly, plus a few minutes spent using GPS to track ourselves and browsing the internet for roughly 45 mins, the battery pretty much lasted the day, although it was often in the yellow zone come 11PM.
However, what was more impressive (and a relief) was the sleep state of the HTC Sensation. Where before the phone would get very hot and start spewing out battery life in our pocket for no reason, if you leave the phone locked up for around 10-15 minutes on our new model the power consumption dropped to almost nothing.
Click to expand...
Click to collapse
Source: http://www.techradar.com/reviews/phones/mobile-phones/htc-sensation-943466/review?artc_pg=9
I was going to switch to get a replacement model today since I'm still within my "grace" period, but something strange happened yesterday.
After trying out loads of different custom ROMs which all made no improvement to my terrible battery life, on Saturday I went back to the stock ROM (although the 2.3.4 version which is not yet out in Ireland), and on Saturday I suddenly had decent battery life (i.e. lasted the whole day and more)! Saturday night, still planning to return my phone on Monday (today) I switched back to the 2.3.4 stock ROM and put S-ON back on for warranty purposes. Then Sunday and today I still have the acceptable battery life of 1 or more days with light usage!
So, still have to do more research.
But simple answer:
Just get a replacement and hope you get a "working" model; otherwise, ask for a SGSII.
well, this is my second one. and i also have the same observation, after upgrade to 2.3.4 , battery life seems to have improved (OR is it just a perception? ). I have got much talked about anker battery, and just put it in. let it go thru couple of charge-discharge cycle, and then i will comment.
manuelkuhs said:
Since I have a similar battery problem and have done hours and hours of research including testing various ROMs, I think the answer to this strange behaviour (some people with good battery life, some without) is indicated by TechRadar's Sensation review:
Source: http://www.techradar.com/reviews/phones/mobile-phones/htc-sensation-943466/review?artc_pg=9
I was going to switch to get a replacement model today since I'm still within my "grace" period, but something strange happened yesterday.
After trying out loads of different custom ROMs which all made no improvement to my terrible battery life, on Saturday I went back to the stock ROM (although the 2.3.4 version which is not yet out in Ireland), and on Saturday I suddenly had decent battery life (i.e. lasted the whole day and more)! Saturday night, still planning to return my phone on Monday (today) I switched back to the 2.3.4 stock ROM and put S-ON back on for warranty purposes. Then Sunday and today I still have the acceptable battery life of 1 or more days with light usage!
So, still have to do more research.
But simple answer:
Just get a replacement and hope you get a "working" model; otherwise, ask for a SGSII.
Click to expand...
Click to collapse
abachhan75 said:
well, this is my second one. and i also have the same observation, after upgrade to 2.3.4 , battery life seems to have improved (OR is it just a perception? ). I have got much talked about anker battery, and just put it in. let it go thru couple of charge-discharge cycle, and then i will comment.
Click to expand...
Click to collapse
How's the Anker battery? I'm getting mine tomorrow hopefully Bought a spare which I'm planning to resell internationally in case someone wants one (difficult to buy outside of UK or US for reasonable price)
manuelkuhs said:
How's the Anker battery? I'm getting mine tomorrow hopefully Bought a spare which I'm planning to resell internationally in case someone wants one (difficult to buy outside of UK or US for reasonable price)
Click to expand...
Click to collapse
i have been using anker battery for last few days. looks good so far, it lasts a day. It works great with wifi, but using data on 4g (TMOUS) drains it a lot faster.

Guess, I get to ask for help. [Ticket Closed for Now]

Background: I have had phone 11 months. I am very familiar with how the battery drain is while it is stock (WiFi ON all the time). battery lasted ~16h which is plenty for me.
Rooted phone, Battery Life on AR14 and IceColdSandwich (and others) was around 20h with WiFi on all the time and light use.
Recent Kernels (anything IceColdSandwich 3.0.0+ or AR 23+ (haven't tested between 14 and 23) cause a base of around 50mA of drain even when phone is locked. Battery life is ~8-10hours WITH NO USE. I have tried these ROMs without installing ANYTHING on them with the same results.
Current Widget does not identify an offending program from what I can tell.
WiFi off, the phone lasted 2d9hr of pretty light use.
I first started looking into WiFi when I forgot to turn off airdroid and unplugged the phone for 3 hours. I found AirDroid still running but could not connect to it via laptop or desktop until I tinkered with the phone a bit more and the WiFi connection cycled.
However during this time, the charge lost on the battery was a reasonable rate, and after the WiFi connection cycled it dropped like the usual rock.
What I've tried:
WiFix
WiFi polling interval increase
Cleaning/checking battery cover contacts
Changing battery covers
Battery Calibration (which is a myth from other reading I've done)
A couple of different programs like Juice Defender.
On the list to do:
Try a different Kernel
Root my friend's phone and trade him hardware (he says he never uses WiFi, so it won't be an issue for him)
/wrists
Thanks for all the suggestions and help so far. I understand that the problem is pretty obscure and seems rare.
on icecoldsandwich ive seen quite a few people show an improved battery draining using lordmods newer bfs kernel. maybe give that a try and report back?
http://forum.xda-developers.com/showthread.php?t=1450962
kernel: http://goo.gl/ZqBZl
btw, very good informative question. its heart warming usually we get 'my battery sucks yo, fix it!' haha
Here is some irony.
Exitz ICS AR25 has been on the phone for a couple of days and has lost essentially 10% per hour when not on the charger (been off work in my house) After the 4th day, I installed AirDroid and AngelCamera. I took it off the charger last night...
92% 6 hours later AND the phone has been awake(?) all night...
Seems I left AirDroid 'running' but couldn't connect to the phone through AirDroid until after the WiFi cycled...
I will see how the drain is today. I'll out of the house all day tomorrow (half a day in Denver), toggle off the wifi for a day at home, and then try your suggestion Darunion.
Here are a few screen shots (first two are old), and honestly, I don't know how much I trust the battery stats.
IceColdSandwich 2.0.0 pretty much shows that battery life I have been used to for a long time including before rooting. Not AMAZING, but not fail. (WTF Proximity Recaibrator 29% of Drain on a 16 hour day?) Also note this is about the same rate of drain I experienced with Existz AR14 last week. Light use and ~16-19 hours of battery life. Not amazing, but I can live with it.
IceColdSandwich 3.0.0 pretty much shows the battery life I have been getting with any ICS roms since.. well 3.0.0 was released. Oh and the voice call that is 37% of drain lasted less than 10 minutes.
Existz AR25 (someofthedrain.png) the steep drop was a 20 minute phone call...
And Finally Airdroidwtf.png is the same install three nights later (this morning) If I could get battery drain like THIS on a regular basis...
Anyway, I'll keep trying to isolate this down to the specific 'area' of the phone that is causing it....
Edit: and as for Darunion commenting about the information I've included... I'm a patient person, I don't want to be a drain on the community, and I have no issue trying to solve a ROM, APP, Radio, RIL, Or watever issue. I'm only posting because the issue isn't unique to a ROM but is unique to a time frame AND the issue is not solveable via Google or XDA search
Right now it is looking like the 'extra' drain on newer ROMs is directly related to the wireless being on*.
Right now the phone is at 1day 19 hours with 14% left and the wireless was only on for the first couple of hours this charge cycle.
I never thought there would be such a considerable difference between battery usage on any ROMs.
I'm going to continue looking around and trying to solve things, and I haven't quite made it to trying the Kernel, Darunion. It is on the list after I toggle WIFI on and off throughout a day.
*The rest of this post is just back-story I have ran the phone on stock for 11 months before rooting it and during that time, I got used to leaving the WIFI running all the time simply because the battery always lasted through my longer days and my-typical light-use. I'm near WIFI that my phone connects to about 80% of the time.
So after rooting, I had a little increase in battery life and I never changed this habbit, or more to the point, I was leaving WIFI on as to make it one less variable in drain while testing various ROMs and different build dates.
Wulamoc said:
Right now it is looking like the 'extra' drain on newer ROMs is directly related to the wireless being on*.
Right now the phone is at 1day 19 hours with 14% left and the wireless was only on for the first couple of hours this charge cycle.
I never thought there would be such a considerable difference between battery usage on any ROMs.
I'm going to continue looking around and trying to solve things, and I haven't quite made it to trying the Kernel, Darunion. It is on the list after I toggle WIFI on and off throughout a day.
*The rest of this post is just back-story I have ran the phone on stock for 11 months before rooting it and during that time, I got used to leaving the WIFI running all the time simply because the battery always lasted through my longer days and my-typical light-use. I'm near WIFI that my phone connects to about 80% of the time.
So after rooting, I had a little increase in battery life and I never changed this habbit, or more to the point, I was leaving WIFI on as to make it one less variable in drain while testing various ROMs and different build dates.
Click to expand...
Click to collapse
I was on battery for around 13 hours yesterday with wifi on for at least 8 hours of that and plugged my phone in with 51% battery remaining.
ST3ALTHPSYCH0 said:
I was on battery for around 13 hours yesterday with wifi on for at least 8 hours of that and plugged my phone in with 51% battery remaining.
Click to expand...
Click to collapse
Yeah, I know this isn't a typical issue for most everyone, and am not implying so.
Likely it will end up being something very specific to the two WIFI networks I am at for 80% of the time OR something else that is very specific to my circumstances.
Wulamoc said:
Yeah, I know this isn't a typical issue for most everyone, and am not implying so.
Likely it will end up being something very specific to the two WIFI networks I am at for 80% of the time OR something else that is very specific to my circumstances.
Click to expand...
Click to collapse
Have you, by chance, removed and reinstalled your back covers? I know it's unlikely, but since they contain the antennae, maybe they've come a little loos, resulting in higher imepedence connections.
ST3ALTHPSYCH0 said:
Have you, by chance, removed and reinstalled your back covers? I know it's unlikely, but since they contain the antennae, maybe they've come a little loos, resulting in higher imepedence connections.
Click to expand...
Click to collapse
I have not specifically toyed with the covers as part of trouble shooting. I will be sure that I look at them after my battery finishes charging on WIFI.
It does seem to be more a software difference, (I've casually be at this for the better part of 2 months) as I have seen expected performance when flashing back to a ROM I've used.
Thanks, I like being able to limit variables and this will be one I check before charging the phone again.
(What I'd really love to do is convince my brother or one of two friends who have the Inspire 4g to let me root their phones so I can trade them phones for a week and really isolate out hardware issues
fyi if you are still running icecoldsandwich. 6.2 just was released. Maybe give that a try?
Darunion said:
fyi if you are still running icecoldsandwich. 6.2 just was released. Maybe give that a try?
Click to expand...
Click to collapse
Right now, I'd like to figure out WHY my WiFi is so bad on battery drain with later AOKP releases.
I'll try to rule out hardware issues (I'll look into antenna and MAYBE convince a friend to let me root their phone and trade them for a week... if not then covers at least.)
But likely this is something about newer releases and how my WIFI is setup. I don't live in a high-density area, so it's not because of too much wifi trafficz (I can barely see a 2nd wifi with any device and it's on the opposite end of the frequency choices.... by my settings)
Anyway, I am a very patient person, so I'll continue working on this slowly so that I can be thorough and find the real cause of the problem.
What I would wish is for someone to point me in the direction as to how WiFi MIGHT drain the battery so hard for later releases but not earlier. I'll be reading up more on logcat and how to read it in regards to wifi... but searching and reading is hard because 'wireless' and what not are very vague terms
Now at 1% (still) and 2d9h... is MORE than double my record on the first roms I tried after rooting OR my stock rom. and MORE than quadruple my record on any of the newer roms
I've swapped battery covers with a friend this past weekend, and the WiFi being on still drains the phone considerably (~8%/hr) when turned on. So if it's a hardware issue, it's not in the battery cover.
Wifi and blue tooth are very hard on the battery regardless. But 8% an hour seems pretty steep tho.
I would start by getting the current widget in Google market and put in on your home screen to monitor your Mili-volt ussage. If its running high like the 200+ constantly you have a lot of drain going on. When in sleep mode it should drop down to 0mv up to 8mv. If it stays high in the sleep mode you have apps waking your phone from sleeping. Which causes tremendous drain.
Next I'd try removing apps that have wifi permissions. To see if that drops your mv ussage.
Drop your notifications to less frequent times on your email and Facebook.
Remove any task managers or juice defender. They run constantly.
Google + is a massive battery drainer. Remove or limit notifications and sync as much as possible.
Also running wifi fix apk could also help. If you are knowledgeable enough you could also edit the build.prop to set the wife scan at a less frequent rate as well.
Last but not least get a toggle button widget for wifi and turn it off when not using.
I'd you follow these steps this will drasticly decrease your battery drain.
Sent from Soundwave aboard Nemesis.
dj sampson said:
Wifi and blue tooth are very hard on the battery regardless. But 8% an hour seems pretty steep tho.
I would start by getting the current widget in Google market and put in on your home screen to monitor your Mili-volt ussage. If its running high like the 200+ constantly you have a lot of drain going on. When in sleep mode it should drop down to 0mv up to 8mv. If it stays high in the sleep mode you have apps waking your phone from sleeping. Which causes tremendous drain.
Click to expand...
Click to collapse
Thanks for taking the time for this response!
I started by running current widget for about a week and with a 3 different roms AR23(?), IceColdSandwich 2.0.0, IceColdSandwich 3.0.0.
I was stock for 11 months, and ICS2.0.0 was a little better than battery drain than stock. AR23 and ICS3.0.0 were terrible and pretty much ran a constant 50ma drain asleep or awake as a baseline.
I'd really like to figure out what the difference is with the older AOKP and the newer AOKP, but that may never happen.
Next I'd try removing apps that have wifi permissions. To see if that drops your mv ussage.
Drop your notifications to less frequent times on your email and Facebook.
Remove any task managers or juice defender. They run constantly.
Google + is a massive battery drainer. Remove or limit notifications and sync as much as possible.
Click to expand...
Click to collapse
I've been testing with stock roms since a couple weeks before I posted this thread. This is because current widget didn't really show any specific program causing the issue, so I wanted to make sure that I didn't have some issue from my installed programs.
The most I've installed (out of necessity is AirDroid and AngelCamera) in the past few weeks. Both were installed when I ran without wifi on one charge for 2d9hrs.
(I don't have a google+ account, I don't have juice defender or any task managers aside from the stock rom)
Also running wifi fix apk could also help. If you are knowledgeable enough you could also edit the build.prop to set the wife scan at a less frequent rate as well.
Click to expand...
Click to collapse
I'll do this and see if that helps things. Thank you
Last but not least get a toggle button widget for wifi and turn it off when not using.
Click to expand...
Click to collapse
This is likely going to have to be my solution. Just run cell data all the time unless I am doing something specific like downloading files or uploading pictures.
OR
Maybe I can convince my friend to let me trade him phones (root his and nand backup and then restore all his stuff to my phone) and see if it is about the same drain. His phone was bought a couple months after mine AND from a different vendor, so it isn't going to be out of the same manufacturer's lot.
I'd you follow these steps this will drasticly decrease your battery drain.
Sent from Soundwave aboard Nemesis.
Click to expand...
Click to collapse
Thanks again. I'll definitely try the wifix along with the rest of your suggestions that apply
I'm in the same boat you are. I'm running ics aospX ar-26 and I can barely get mine to last from 8 til 4. Wifi is pretty prevelent around here and I leave it on most of time. I guess I could try turning it off til I need it. Anyway I'll be following this thread.
Sent from the heavens using XDA
You also might consider reading the threads on calibrating battery after flashing roms. I made the mistake of flashing a rom @ 40% battery. It jacked my stats all up. The new rom thought 40% battery was actually 100%. It had my stats all screwed up too. Except mine was Bluetooth. Showed running at 60% of battery ussage. So don't trust that system tool. Because the display is almost alway gonna be the biggest drain on the battery. An app called "spare parts" is a little more accurate.
I ran the gambit on this one finnally got my battery back to normal for me anyway. I've never seen a full days use with out charging. Get about 14 hours Max now. But the calibration steps is the way to go.
Sent from Soundwave aboard Nemesis.
dj sampson said:
You also might consider reading the threads on calibrating battery after flashing roms. I made the mistake of flashing a rom @ 40% battery. It jacked my stats all up. The new rom thought 40% battery was actually 100%. It had my stats all screwed up too. Except mine was Bluetooth. Showed running at 60% of battery ussage. So don't trust that system tool. Because the display is almost alway gonna be the biggest drain on the battery. An app called "spare parts" is a little more accurate.
I ran the gambit on this one finnally got my battery back to normal for me anyway. I've never seen a full days use with out charging. Get about 14 hours Max now. But the calibration steps is the way to go.
Sent from Soundwave aboard Nemesis.
Click to expand...
Click to collapse
I actually have read quite a bit about battery calibration... and before I flashed a new ROM, I've made sure that current widget has been tracking 0ma for a while. (Only reliable way to be sure you have a full battery from what I can tell)
The batterystats.bin file and calibration has been ... contended in a number of places, mostly stating that when taken off the charger 'full' the battery stats file is overwritten... which makes calibration a non-issue (assuming that you occasionally charge your phone for a while after it hits 100% from time to time)
The problem is that the WiFi mA draw is HUGE compared to what it should be (in theory from reading other people's logs), and it's not because of the battery cover. AND It's not as bad in older AOKP ROMs than it is in newer ones. SO it could be a hardware issue exacerbated by a change in how WiFi is handled, but the hardware issue was never noticed because the battery life Stock was sufficient for my needs.
I've been busy working so I haven't been able to continue troubleshooting the phone (damn my patience), but Mondayish, I'll likely have traded my phone with a friend and root it and flash a new rom and see how the drain is with completely different hardware from a different vendor from a different lot of phones.
I had a similar issue with wifi. I changed the build.props wifi supliment scan from every 15 seconds to 180 and used the wifi fix manager apk. That seemed to help. Coupled with a proper battery calibration and I'm back to my display being the major battery draw.
So don't know if that helps but it seemed to work out my bugs.
Sent from Soundwave aboard Nemesis.
This I can do right now.. and given I'm on the same, unmodified AR24 release, I can observe it for the weekend before I annoy my friend about his phone.
Seems the WiFi scan interval was already set to 100... moved it to 180 anyway.
I used to have this issue. I could literally see my battery draining while I was using it. I keep wifi on most of the time. I recently purchased an anker battery online. It is AMAZING! My old battery wouldn't last more than 6 hours or so. Right now I'm at about 14 hours on this charge, and I'm at 47 percent. Try swapping his battery for yours for a day or two. Another thing to try is different radios if you're losing power to cell standby.
Zombies ate my Inspire
DynamiteRave said:
I used to have this issue. I could literally see my battery draining while I was using it. I keep wifi on most of the time. I recently purchased an anker battery online. It is AMAZING! My old battery wouldn't last more than 6 hours or so. Right now I'm at about 14 hours on this charge, and I'm at 47 percent. Try swapping his battery for yours for a day or two. Another thing to try is different radios if you're losing power to cell standby.
Zombies ate my Inspire
Click to expand...
Click to collapse
The phone ran for 2days 9hours with WiFi off and lasts for 8-10 hours with WiFi on. I am pretty sure that it's not a Radio/RIL or a Battery capacity issue. ;(

Battery life is plunging from 80% to zero

Hey all,
About three weeks ago I had a strange problem. I noticed that in two straight charge cycles, my battery life plummeted from about 80% to zero in just a few hours. I'm not sure what the issue was. I hadn't changed settings, installed new apps, etc. My first screenshot shows an example of what happened. 4G and data were off during the entire time.
Since then, things have been okay. I typically get 3 days standby with 4G on and light use, or 4 days with 4G off. That's mostly standby with maybe an hour or so of talking and minimal use.
After those strange battery plummets, I installed and used GSam Battery Monitor to get more details about what processes were running on my phone in case I noticed the sharp drop happening again. Everything had been fine for over two weeks, with me getting expected battery life before this issue and not experiencing any odd, sudden drops (maybe 5 or 6 charge cycles). This lends me to conclude that my battery's charge capacity is okay, and calibration also shouldn't be an issue.
However, the problem arose once again a couple days ago. Went from 75% to nothing in just a few hours. 4G was off during that time. The third and fourth screenshots show the same issue. Charged my phone, and this morning the same thing happened yet again. At about 90% the plummet began, and within an hour or so I was at 75%. At this point I took screenshots of Android's battery status, and I also did the same for GSam to show what apps and processes were running. The phone's temperature seemed fine.
The GSam screenshots taken when the phone was at 75% and dropping are in the next post, since I'm limited to four images in this one. I have no idea what's causing this massive, sudden battery drain. The only thing I can think of is that I've done Verizon's OTA updates, but otherwise pretty much all my settings, apps, and usage are the same. Plus, for two weeks I had normal battery behavior, so I'm completely baffled.
I also know that cell standby is incorrectly reported in the GS3 battery screen, and I'm getting a good signal where I live so that shouldn't be a problem. I forgot to get screen time for the first case (first two images), but it shouldn't be more than 10-15 min there since most of the charge was lost due to the freak plummet.
If anyone may have an idea of what's going on, or if there are some tools/tests I may use to figure this out, I'd really appreciate it. I turned off my phone after taking the screenshots at 75%, so if I need to turn it on and check something for you I can probably do that. Thanks a lot.
FYI, here are GSam screenshots from when the battery was in the process of plummeting this morning.
i think you built in battery status settings are off. i barely get 12 hrs with medium use, so what i think it happens is that the battery monitor is not showing the proper discharge, and then all of a sudden it catches up to the discharge rate.
are you on stock rom, rooted, unlocked bootloader?
wizzardeel said:
i think you built in battery status settings are off. i barely get 12 hrs with medium use, so what i think it happens is that the battery monitor is not showing the proper discharge, and then all of a sudden it catches up to the discharge rate.
are you on stock rom, rooted, unlocked bootloader?
Click to expand...
Click to collapse
I am stock rom. No rooting, no unlocking.
These plunges are definitely an anomaly. Truly, with me barely using the phone and turning off mobile data, I get a few days of standby. I've had the phone since July, and the aberration in battery behavior has been the steep plunges I've shown.
In between these instance of steep plunges, I've had normal use. I really don't think it's an issue of calibration. Please believe me when I say that my normal, light use during the past four months gets me anywhere from 3-5 days with me barely using the phone. When I say barely using it, I mean not even touching it for an entire day if nobody calls me. But now, a sudden plunge in battery life is happening at 80% with no apparent reason.
I think it might be some kind of software or hardware glitch, but it's impossible for this to be normal given the battery life I typically get. Just looking at that steep drop, it's crazy and just happens out of nowhere.
But please trust me when I say that these sudden plunges that have happened a total of 4 or 5 times, causing the battery to drain completely in a few hours when I'm not touching it, are quite a drastic aberration from the normal standby life I get. Something is definitely wrong here, I just don't know what.
And one more thing to add is that after this sudden plunge and rapid drain, charging the battery still takes the normal time it does when I'm not having this issue. That is, about 2.5-3 hours to reach a full charge (and I charge with the phone 'off'). The battery is being completely drained. But this happened twice, then didn't happen for maybe 5-6 charge cycles, then happened again twice.
Before the first instance, I remember an OTA Verizon update around 10/5. My phone was okay for 2-3 charge cycles after that. Then two rapid drains. Then 5-6 normal cycles. Then two more rapid drains. There was a second Verizon OTA update somewhere in there but I can't remember.
and you said it only started once you did the OTA update from verizon right? well you could either try to go back to the stock verizon rom pre-update and see what happens there, or contact verizon and let them know what happens with the new OTA update. they could replace your phone, or it could be a bug of the new OTA update. i am on stock rom and rooted and deleted the apk that kept on trying to push the update. just unlocked by bootloader and so far my battery life has improved compared to previous locked bootloader.
i would take it to a verizon store and show them. They might give you a new battery.
I may have to do that. I'm just not really sure what the issue is.
- The battery can still hold a full charge.
- Based on running services, nothing is causing high CPU usage.
- The sudden plummet almost seems kind of random.
- Since there have been normal charge cycles, it's not an issue of calibration.
I'm not sure if this is a hardware issue or software issue. I'm trying to wrap my brain around what could cause the battery to drain so suddenly and sharply. Could the charge somehow be "leaking"? But in that case I'd expect it to happen all the time. If there's an underlying software issue, is there any other tool I might be able to use to figure it out?
Does the phone get hot?
Sent from my SCH-I535 using xda app-developers app
jhoutz said:
Does the phone get hot?
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
Not from what I can tell. Note that the first couple plummet drains were overnight.
But today I caught it before noon. The phone wasn't hot, and the GSam screenshots show no CPU stress.
Maybe you can do a factory reset and se if that helps. They will probably do one if you bring it to verizon anyways. It sure sound like a hardware problem. You'd think if the processors are working that hard that the phone would get hot, I know mine gets pretty hot sometimes under heavy use.
Sent from my SCH-I535 using xda app-developers app
Thing is, all indications show the CPU isn't working hard, and the phone wasn't hot.
I'm stumped.
This is a noobish question, but I presume the only way to go back to stock is to factory reset? One thing I might wait for is the Jelly Bean update, presuming this random drain holds off until then.
But yea, I dread going into VZW because they're just going to try to pass this off onto me doing something wrong, or me not knowing how to calibrate the battery, etc. The information I've provided in my OP and in the screenshots would fly over their heads. Maybe I can just do an online chat and tell VZ to send me another battery?
The only other thing I can think of is that sometime before these plummets happened, I went online to MyVerizon and turned off the Backup Assistant for movies/music/etc. so I wouldn't get all those notifications. I don't think this could be the issue, since the plummet happens when data is off. Plus, GSam would show that Backup Assistant is hogging the CPU or forcing a signal.
I doubt swapping batteries will fix it, though. I'm thinking my internal hardware might have a serious problem.
inm8num2 said:
Thing is, all indications show the CPU isn't working hard, and the phone wasn't hot.
I'm stumped.
This is a noobish question, but I presume the only way to go back to stock is to factory reset? One thing I might wait for is the Jelly Bean update, presuming this random drain holds off until then.
But yea, I dread going into VZW because they're just going to try to pass this off onto me doing something wrong, or me not knowing how to calibrate the battery, etc. The information I've provided in my OP and in the screenshots would fly over their heads. Maybe I can just do an online chat and tell VZ to send me another battery?
The only other thing I can think of is that sometime before these plummets happened, I went online to MyVerizon and turned off the Backup Assistant for movies/music/etc. so I wouldn't get all those notifications. I don't think this could be the issue, since the plummet happens when data is off. Plus, GSam would show that Backup Assistant is hogging the CPU or forcing a signal.
I doubt swapping batteries will fix it, though. I'm thinking my internal hardware might have a serious problem.
Click to expand...
Click to collapse
Before the update, was everything normal?
Is the update with the HE base/baseband?
It probably isn't a hardware problem, just a bad base.
I've noticed after updating my GS3 to the HE base and the battery life was just horrid.
It's said that the new HE baseband uses up more battery also
emckai said:
Before the update, was everything normal?
Is the update with the HE base/baseband?
It probably isn't a hardware problem, just a bad base.
I've noticed after updating my GS3 to the HE base and the battery life was just horrid.
It's said that the new HE baseband uses up more battery also
Click to expand...
Click to collapse
Sorry, I don't know what you mean by "HE" base/baseband.
But yea, this problem didn't come up until after an OTA update.
Check your baseband version under Settings -> About and paste it here
Sent from my rooted Verizon Samsung Galaxy SIII
It's I535VRLHE
Kernel version: 3.0.8-1092717
Build number IMM76D.I535VRALHE
I turned on the phone and within 10 min or so the battery life went down by 2-3% without me doing anything. As a test I've put it into Airplane mode, and it's decreased by about 2% in 45 min.
Now I'm wondering if I have a faulty antenna or something.
Yup ive had it drain 90% overnight many times for no reason. Called verizon and my new battery should be here today.
1+ day on battery and only 11 minutes of screen time?!?
inm8num2 said:
It's I535VRLHE
Kernel version: 3.0.8-1092717
Build number IMM76D.I535VRALHE
I turned on the phone and within 10 min or so the battery life went down by 2-3% without me doing anything. As a test I've put it into Airplane mode, and it's decreased by about 2% in 45 min.
Now I'm wondering if I have a faulty antenna or something.
Click to expand...
Click to collapse
HE is the baseband version and the build number. For example I have: Android Version: 4.0.4
Baseband: I535VRLG7
Build: IM76D.I535VRALG7
which is the version before the update.
Like everybody else said, call Verizon or go to a store and let them know about the battery issues and they should send you a new one. Or even call Samsung and tell them you bought an S3 through Verizon and you are having battery hardware issues.
sonser said:
1+ day on battery and only 11 minutes of screen time?!?
Click to expand...
Click to collapse
Well, no calls made or received during that time. No data being used.
So, wasn't really using the phone during that time...

Battery life has suddenly become much shorter

Having been really impressive so far, my battery life appears to have dropped drastically over the last couple of weeks. Previously my battery would comfortably last the whole day, I could leave the house at the start of the day at about 60% and be confident it would easily last the whole day, now I leave the house on 100% and I'm down to about 20% by the time I'm home from work. In particular, whenever I'm down to 14% my phone seems to drop pretty much instantly to 8% .
I can't think of anything I'm doing differently, only thing that comes to mind is I updated my phone via my computer a few weeks ago but no idea if that's connected to the problem. I installed GSAM for a week ago and haven't really been able to pinpoint where all my battery is going, my phone has continued to show a lot less battery capacity than before and also seems to be taking longer than usual to charge.
As expected Screen and App Usage are the main drain on the battery both tend to be somewhere in the 40%-55% region. The only thing which surprised me is that Facebook (which I don't excessively use) is pretty much always at the top of my app usage, often at about 20%-30% of the app usage. So I can uninstall and reinstall this as it may be partly to blame but it doesn't really account for why my battery is dying so much quicker than before. I could also dim the screen a bit to help but I kind of don't feel like I should have to as I've never changed it the whole time I've had the phone so it shouldn't be a cause of why my battery has suddenly got worse.
Any ideas?
I think you have to perform hard reset for your Z3 (maybe some app "eat" your battery), or boot your device in a safe mode and try to recognize what application make battery so quick discharge. Try to use stamina mode.
Did you often charge your phone? After hard reset I recommend you train your battery couple times (3-4 times), for this you should discharge your phone to 1-2% and charge it up to 100% without disconnecting. I hope it will help you in your trouble.
How much screen on time do you get?
I recommend Better Battery Stats to see what's causing your drain(maybe you can attach some screenshots). And yeah FB drains a lot.
Unfortunately I am a new user of this forum and can't post outside links but if you will enter this "These apps are draining most of your data and battery life" words into the google search you will get very interesting article about battery usage of facebook and another very famous apps.
Tmel14 said:
Having been really impressive so far, my battery life appears to have dropped drastically over the last couple of weeks. Previously my battery would comfortably last the whole day, I could leave the house at the start of the day at about 60% and be confident it would easily last the whole day, now I leave the house on 100% and I'm down to about 20% by the time I'm home from work. In particular, whenever I'm down to 14% my phone seems to drop pretty much instantly to 8% .
I can't think of anything I'm doing differently, only thing that comes to mind is I updated my phone via my computer a few weeks ago but no idea if that's connected to the problem. I installed GSAM for a week ago and haven't really been able to pinpoint where all my battery is going, my phone has continued to show a lot less battery capacity than before and also seems to be taking longer than usual to charge.
As expected Screen and App Usage are the main drain on the battery both tend to be somewhere in the 40%-55% region. The only thing which surprised me is that Facebook (which I don't excessively use) is pretty much always at the top of my app usage, often at about 20%-30% of the app usage. So I can uninstall and reinstall this as it may be partly to blame but it doesn't really account for why my battery is dying so much quicker than before. I could also dim the screen a bit to help but I kind of don't feel like I should have to as I've never changed it the whole time I've had the phone so it shouldn't be a cause of why my battery has suddenly got worse.
Any ideas?
Click to expand...
Click to collapse
I'm currently having the exact problem. Without making any special changes. My battery has gone from the announced 2 day levels to just surging away in the background.
Here's some pics. https://drive.google.com/folderview?id=0B7QU-WxZhNG0SnZ3ZDV6eVM3WFk&usp=sharing
First is from 26th of February (Named 0226). This was the only picture I had from an earlier date. The rest is from today.
---------- Post added at 03:08 PM ---------- Previous post was at 03:06 PM ----------
Solpadein said:
Unfortunately I am a new user of this forum and can't post outside links but if you will enter this "These apps are draining most of your data and battery life" words into the google search you will get very interesting article about battery usage of facebook and another very famous apps.
Click to expand...
Click to collapse
"I can't think of anything I'm doing differently, only thing that comes to mind is I updated my phone via my computer a few weeks ago but no idea if that's connected to the problem."
You know, with my old Xperia Z was the same think after update with computer and after I had performed hard reset everything has been ok with the battery. So If you will not try - you will not know. But be careful all what you will do is on you own risk.
I think it has to do with the latest google app update. My battery life has gone down hill this past week after that.
Same here mate!
Tmel14 said:
Having been really impressive so far, my battery life appears to have dropped drastically over the last couple of weeks. Previously my battery would comfortably last the whole day, I could leave the house at the start of the day at about 60% and be confident it would easily last the whole day, now I leave the house on 100% and I'm down to about 20% by the time I'm home from work. In particular, whenever I'm down to 14% my phone seems to drop pretty much instantly to 8% .
I can't think of anything I'm doing differently, only thing that comes to mind is I updated my phone via my computer a few weeks ago but no idea if that's connected to the problem. I installed GSAM for a week ago and haven't really been able to pinpoint where all my battery is going, my phone has continued to show a lot less battery capacity than before and also seems to be taking longer than usual to charge.
As expected Screen and App Usage are the main drain on the battery both tend to be somewhere in the 40%-55% region. The only thing which surprised me is that Facebook (which I don't excessively use) is pretty much always at the top of my app usage, often at about 20%-30% of the app usage. So I can uninstall and reinstall this as it may be partly to blame but it doesn't really account for why my battery is dying so much quicker than before. I could also dim the screen a bit to help but I kind of don't feel like I should have to as I've never changed it the whole time I've had the phone so it shouldn't be a cause of why my battery has suddenly got worse.
Any ideas?
Click to expand...
Click to collapse
Phew! Thought it was just me who had the problem. I thought it might be some apps I recently installed. I tried uninstalling them but the battery life seemed to have gone down regardless. Its not the same as it was about 2 months ago. I used to easily end the day with over 45-50% but now i need to recharge it around 9pm when its at 10-15%. It could be the new updates that are rolling in for the various apps i already had installed will install battery stats and wait for a better picture.
Tmel14 said:
Having been really impressive so far, my battery life appears to have dropped drastically over the last couple of weeks. Previously my battery would comfortably last the whole day, I could leave the house at the start of the day at about 60% and be confident it would easily last the whole day, now I leave the house on 100% and I'm down to about 20% by the time I'm home from work. In particular, whenever I'm down to 14% my phone seems to drop pretty much instantly to 8% .
I can't think of anything I'm doing differently, only thing that comes to mind is I updated my phone via my computer a few weeks ago but no idea if that's connected to the problem. I installed GSAM for a week ago and haven't really been able to pinpoint where all my battery is going, my phone has continued to show a lot less battery capacity than before and also seems to be taking longer than usual to charge.
As expected Screen and App Usage are the main drain on the battery both tend to be somewhere in the 40%-55% region. The only thing which surprised me is that Facebook (which I don't excessively use) is pretty much always at the top of my app usage, often at about 20%-30% of the app usage. So I can uninstall and reinstall this as it may be partly to blame but it doesn't really account for why my battery is dying so much quicker than before. I could also dim the screen a bit to help but I kind of don't feel like I should have to as I've never changed it the whole time I've had the phone so it shouldn't be a cause of why my battery has suddenly got worse.
Any ideas?
Click to expand...
Click to collapse
AkshayHegde said:
Phew! Thought it was just me who had the problem. I thought it might be some apps I recently installed. I tried uninstalling them but the battery life seemed to have gone down regardless. Its not the same as it was about 2 months ago. I used to easily end the day with over 45-50% but now i need to recharge it around 9pm when its at 10-15%. It could be the new updates that are rolling in for the various apps i already had installed will install battery stats and wait for a better picture.
Click to expand...
Click to collapse
Does anyone of you use Spotify? It seems to be the culprit for me. Today I have 0,7%/h drain instead of 3-4% compared to yesturday. Haven't started it at all. Seems to be the problem. It was also updated this week in the possible range for when I noticed the problem

Battery life greatly getting worse

Has anyone noticed their battery getting incredibly worse over time? I bought my S7 on release (non edge). And since then, I've noticed that it doesn't last no where near as long. Today, for example I started my day at 7:00am when the battery was 100%. As of 30 minutes ago, the battery reached critically low (5%). From 7am all I did was watch a few videos, facebook, snapchat and then play music. But all the above for not too long.
I've also noticed that once the phone hits the 15% battery (I know due to the notification), that within minutes the battery can be done to 10% or so, without touching it.
I'm more so tempted just to take it back, unless there's an easy fix OR it's a known issue with the current version.
Thanks!
xxshabsxx said:
Has anyone noticed their battery getting incredibly worse over time? I bought my S7 on release (non edge). And since then, I've noticed that it doesn't last no where near as long. Today, for example I started my day at 7:00am when the battery was 100%. As of 30 minutes ago, the battery reached critically low (5%). From 7am all I did was watch a few videos, facebook, snapchat and then play music. But all the above for not too long.
I've also noticed that once the phone hits the 15% battery (I know due to the notification), that within minutes the battery can be done to 10% or so, without touching it.
I'm more so tempted just to take it back, unless there's an easy fix OR it's a known issue with the current version.
Thanks!
Click to expand...
Click to collapse
I've definitely noticed this since rooting. Maybe it has something to do with that? Like a ROM you flashed or what not? I'd like some suggestions here as well.
Thanks!
musashiasano said:
I've definitely noticed this since rooting. Maybe it has something to do with that? Like a ROM you flashed or what not? I'd like some suggestions here as well.
Thanks!
Click to expand...
Click to collapse
I haven't rooted the S7, it was the first phone that I've left stock from opening.
What does the battery stats say is using the most mAh?
Facebook app is a known battery hog
Obviously over time, you'll install different things, and slowly the phone will start using more and more power running background apps
A backup and Factory reset will show if there is a hardware / battery issue, or if it's purely from stuff you've installed over time
Also clearing the caches from recovery could help
yeah ive noticed this too. My usage habits havent changed but my battery life is almost half of what it was when i just got the phone.
*Detection* said:
What does the battery stats say is using the most mAh?
Facebook app is a known battery hog
Obviously over time, you'll install different things, and slowly the phone will start using more and more power running background apps
A backup and Factory reset will show if there is a hardware / battery issue, or if it's purely from stuff you've installed over time
Also clearing the caches from recovery could help
Click to expand...
Click to collapse
Cache has been cleared from recovery, and I don't generally install many apps so since I've bought the phone the apps have stayed the same.
Android system is always on top. Unless of course I spend hours on Facebook.
Might have to factory reset. I've used my phone with the same apps and time since I've bought it, and I'm finding I'm charging it 3x as much.
I think it's a root issue - deep sleep.
After S6 Edge Plus, when you root a samsung phone, it won't go in deep sleep. I believe there's a fix for that.
Have you checked the battery usage stats? It gives you the breakdown on what apps are eating up the battery.
I have had my S7 for about a month and battery is about the same.
Just to update this thread for those that may have a similar issue...the other day I couldn't live with the battery life the way it was. The phone used 50% in several hours where I barely used it.
Decided to completely re-flash with stock (was stock before) as opposed to simply wiping all data. A week in, and the phone's battery life is back to the way it was. I went to bed when it was on 100% (as a test) and woke up 7 hours later with the phone on 94%, with wifi, location and bluetooth on.
Not sure what had caused it to use so much battery previously, but it's back to what it should be and that's all that matters.
hi with my s7 exynos i do 3h screen. i think there is a problem. i bought my s7 one week ago. can anyone help me?
Rooting and installing custom kernels when done right should greatly increase the battery life of your device. This is a well known guide here on XDA for improving battery life for our devices.
That being said, Lithium Ion Batteries hold less charge the more cycles they are put through, its a given fact but as you said your device is relatively new and therefore should not be experiencing this kind of problem. The way I see this is there are 3 possibilities which may be causing the said problem...
1) You have rooted the device and done some modification/s. ( which you haven't done )
2) Your battery is being drained by a service ( Like Oculus or VR ) in fact a number of reddit users complained their S7 was overheating and battery was draining really fast for some reason. Check This page out, It might help you.
3) Battery Defect, you must've gotten a "bad" model, if you haven't tripped KNOX you could try bringing your phone to Samsung and see if they would fix or replace it.
Good luck
I think this has to due to them samsung updates. As far as i know samsung been always doing things like this where they made the OS slow as hell after a while so you gonna get a upgrade sooner but a battery should last 2 years minimal without degrading.
---------- Post added at 03:36 AM ---------- Previous post was at 03:34 AM ----------
petmike2 said:
hi with my s7 exynos i do 3h screen. i think there is a problem. i bought my s7 one week ago. can anyone help me?
Click to expand...
Click to collapse
i get like 5 hours screen on time and bout 1 day standby time but i have most bloatware disabled with the package disabler. But if i was you i would contact samsung.
This happens with Samsung updates on every Galaxy phone. It's like a curse. It's unavoidable.
Enviado desde mi SM-G920F mediante Tapatalk
May i ask if the people with these problems use the fast charge? I hearing many bad things bout this so i switched it off and must say the normal charge isn't that slow and if it can keep the battery good for longer then we all should use this.
I turned fast charge off about a week after I got the phone, was making the phone and charger pretty hot for the sake of about 5-10 mins quicker charge
Pointless really, unless you are desperate, only have a few mins spare and need as much power as possible in that short time, and if that's the case, enable it for that one time
Restrict background data on all but the most important apps (phone, text, email), dave power all but the most important apps. Battery life is fine
Sent from my SM-G935T using XDA Free mobile app

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