S7 Battery Drain? Or Potentially Another Problem? - Samsung Galaxy S7 Questions and Answers

So my sister upgraded her phone and gave me her old Galaxy S7. It has a problem, when left idle, it will drain its battery to 0%, essentially shutting itself down. But I tried watching a 50 minute video on it and it lost 20%. So theoretically, it should have about 4 hrs of video playback capacity.
So my question is, will replacing the battery solve this problem? Or could the problem be something else? Cause I really don't wanna go out and buy a new battery for this, without being certain first.
Thank you all for your responses!

paronda said:
So my sister upgraded her phone and gave me her old Galaxy S7. It has a problem, when left idle, it will drain its battery to 0%, essentially shutting itself down. But I tried watching a 50 minute video on it and it lost 20%. So theoretically, it should have about 4 hrs of video playback capacity.
So my question is, will replacing the battery solve this problem? Or could the problem be something else? Cause I really don't wanna go out and buy a new battery for this, without being certain first.
Thank you all for your responses!
Click to expand...
Click to collapse
If the phone is working normally, the possible reason is battery or a bug in a management service of the battery. Make e full backup, do a factory reset and see again.

Alesyz said:
If the phone is working normally, the possible reason is battery or a bug in a management service of the battery. Make e full backup, do a factory reset and see again.
Click to expand...
Click to collapse
My sister had this problem before she handed this phone to me. I reformatted it as soon as I got it.
So do you think that replacing the battery will really solve this?

paronda said:
My sister had this problem before she handed this phone to me. I reformatted it as soon as I got it.
So do you think that replacing the battery will really solve this?
Click to expand...
Click to collapse
Turn Airplane mode on the phone and leave to for a couple of hours. Then check it again.

Related

[Q] Cell Standby?

Hey, I was wondering if anyone that is on Verizon if their Cell Standby has been going crazy and draining all your battery over night?
I had no problems with the phone at all until 2 days ago where i left it off charge over night and the cell standby was beyond crazy high.
http://i.imgur.com/Oqy1L.png
I was wondering if there could be anything from an app that I downloaded (I seriously have maybe 5 apps downloaded) or that Verizon has been doing cell work over night which is trying to find data? I'm not sure and it's really bothering me.
Anyone else having the same issue?
Unless your battery is really draining faster, it is a display bug.
Randomacts said:
Unless your battery is really draining faster, it is a display bug.
Click to expand...
Click to collapse
Well it's been happening for a few days so I don't know what to do. I just factory re set the device and hoping the cell standby isn't high again. If it is I'm just going to go replace the phone.

Weird battery meter problem

Hi
I have a TF700T, unlocked, TWRP and CROMI 3.0.4.
My battery meter is acting weird. For example I recharged both my tab and the dock this afternoon. I unplugged them around 16:30. I've been using my tab for the last few hours (it's now past midnight), not all the time, but quite often. The meter on the tab is still showing 100%. The one for the dock is showing 94%. This is not the normal behavior of my tab and it's been doing that since I unlocked and installed TWRP and CROMI. Before, it would start to go down almost immediately, and would start recharging only at 70%, like it's supposed to.
Last time it stayed at 100% for a while and then started to drain very quickly, and then stabilized and started to act normally.
I'm trying to understand whatcould be the problem. Last time it got "stuck" like that I went to recovery and TWRP was also showing 100% power left. So it's not CROMI. But it's something... Anybody else with the same problem? Or anyone got a solution, an idea? Because I'm worried this will get worse...
Thanks
You could try clearing the battery stats. I think TWRP has the option to do it, not sure about CWM.
Ok thanks sdbags, I'll look into that...
Is there an ideal moment to do that? After a full recharge?
Usually you do 100% charge, clear stats, reboot let it get back to 100% and unplug but to be honest it probably doesn't really matter.
You'll know fairly soon if you still have the problem.
I just checked mine and it started with tablet battery until down to 89%, then dock battery kick in maintain the tablet battery around 89-90%.
The dock shouldn't recharge the tab unless it reaches 70% or lower. At least it's what it was doing before, and what's documented as normal behavior. Since my tab spends 99% of its time docked, I don't know how it would behave undocked...
Looks like it solved the problem for now. Thanks sbdags!
Sent from my SGH-I747M using Tapatalk 2
Well, unfortunately, it isn't solved. When I deleted batterystats.bin it went back to "normal" at first, the tab was fully charged and it started to go down almost immediatly after I unplugged it. But yesterday it died on me while the gauge was still showing a little bit less than 30%!!! I did a full charge last night, and it's back to its old tricks: stucked at 100% for the last 8 hours (overnight).
This is very annoying... Is there anything I can do to recalibrate the battery gauge?
And why is this happening? I didn't have this problem when locked with stock ROM and recovery... I'm not complaining, I just want to understand and maybe try to fix this! Thanks!
acme99 said:
Well, unfortunately, it isn't solved. When I deleted batterystats.bin it went back to "normal" at first, the tab was fully charged and it started to go down almost immediatly after I unplugged it. But yesterday it died on me while the gauge was still showing a little bit less than 30%!!! I did a full charge last night, and it's back to its old tricks: stucked at 100% for the last 8 hours (overnight).
This is very annoying... Is there anything I can do to recalibrate the battery gauge?
And why is this happening? I didn't have this problem when locked with stock ROM and recovery... I'm not complaining, I just want to understand and maybe try to fix this! Thanks!
Click to expand...
Click to collapse
Could be a battery hardware issue? Sounds like it's not reporting its current and voltage correctly.
You need to get some battery monitoring apps on it so you can see what is really going on.
sbdags said:
Could be a battery hardware issue? Sounds like it's not reporting its current and voltage correctly.
You need to get some battery monitoring apps on it so you can see what is really going on.
Click to expand...
Click to collapse
Could be, but it's weird that it started just after I decided to unlock. It was fine the first 4 months of its life...
Any battery monitoring app you recommend? There are a few on Google Play... I have Battery Widget Reborn, it does some monitoring, but it doesn't provide a lot of information. I'm sure there is an "ultimate battery app" or something... Any suggestion will be greatly appreciated!
acme99 said:
Could be, but it's weird that it started just after I decided to unlock. It was fine the first 4 months of its life...
Any battery monitoring app you recommend? There are a few on Google Play... I have Battery Widget Reborn, it does some monitoring, but it doesn't provide a lot of information. I'm sure there is an "ultimate battery app" or something... Any suggestion will be greatly appreciated!
Click to expand...
Click to collapse
Try battery monitor widget. It does everything you need.
https://play.google.com/store/apps/details?id=ccc71.bmw&feature=nav_result#?t=W251bGwsMSwyLDNd
sbdags said:
Try battery monitor widget. It does everything you need.
https://play.google.com/store/apps/details?id=ccc71.bmw&feature=nav_result#?t=W251bGwsMSwyLDNd
Click to expand...
Click to collapse
Ok, thanks... Will try that and report!
Ok... So I did some testing... My tab is shutting down (more like crashing) at 28% and showing 6561 mV. I then have to plug it in and wait for 5-8 minutes before it will allow me to boot it.
So I plugged it in... It reached 100% at 8169 mV... But then, it continued to charge. As of now, it is at 8296 and still going up as I'm writing this!!
This issue is the same as issue #2 in this thread:
http://forum.xda-developers.com/showthread.php?t=2090826
Now, I don't know, but it look suspicious to me that this problem started when I installed TWRP and CROMI. Could it be related, somehow??
Additionnal details:
http://code.google.com/p/android/issues/detail?id=41224
acme99 said:
Additionnal details:
http://code.google.com/p/android/issues/detail?id=41224
Click to expand...
Click to collapse
What happens if you wipe the battery stats again?
The only other thing I can recommended is a total wipe, reflash Asus stock to redo the bootloader, TWRP and reflash CROMI. Others don't have this problem so it is something particularly to your setup.
All those posts you linked are pointing to the 4.2.1 update causing the issue. As we only have 4.1.1 I can't see any relationship unless Asus injected some 4.2.1 code into their latest update which seems unlikely.
sbdags said:
What happens if you wipe the battery stats again?
The only other thing I can recommended is a total wipe, reflash Asus stock to redo the bootloader, TWRP and reflash CROMI. Others don't have this problem so it is something particularly to your setup.
All those posts you linked are pointing to the 4.2.1 update causing the issue. As we only have 4.1.1 I can't see any relationship unless Asus injected some 4.2.1 code into their latest update which seems unlikely.
Click to expand...
Click to collapse
I wiped the stats yesterday. Looks like it doesn't do much.
I'll go ahead and reflash stock...
Thanks!
acme99 said:
I wiped the stats yesterday. Looks like it doesn't do much.
I'll go ahead and reflash stock...
Thanks!
Click to expand...
Click to collapse
I suggest you should do a full wipe and reflash cleanrom and kernel. This way you can eliminated all the possiblility with software and pin it on hardware.
acme99 said:
Could be, but it's weird that it started just after I decided to unlock. It was fine the first 4 months of its life...
Any battery monitoring app you recommend? There are a few on Google Play... I have Battery Widget Reborn, it does some monitoring, but it doesn't provide a lot of information. I'm sure there is an "ultimate battery app" or something... Any suggestion will be greatly appreciated!
Click to expand...
Click to collapse
I have the same problem with my battery meter, and just like with you, it started when my TF700T was almost exactly 4 months old. The batteries (dock and tablet) have to be close to drained. I've been using the tablet without batteries for many hours, both yesterday and today. But my tablet battery is showing 100% and the dock battery is at 95%. That has to be wrong.
I have GSam Battery Monitor Pro. It can only tell me about the tablet battery (it's blind to the dock battery). Yesterday when I looked at this, it was telling me that the screen used no power. I'm looking at it now and it says that screen is using 68.6% of the power - that's more like it. But it's weird that yesterday the number was zero. It tells me that the unit has only been unplugged for 5 seconds, and has been telling me that since I unplugged it yesterday. GSam usually saves history, but not in this case because it thinks the unit has only been running on battery power for 5 seconds.
I also have a battery widget that is dual-battery aware. It has a history chart, but it doesn't tell me much. It shows the tablet battery at a constant level of 100% with no dips, and the dock battery very slowly dropping from 100% to 95% over the last two days. This is just wrong.
What's been happening is that the tablet will suddenly shut down when I think it's charged, and then I can't turn it on. I didn't realize what was wrong until I discovered that if I plugged it in for a while, I could turn it on again. Obviously the battery is draining completely, but the meter is incorrect. Also, draining the battery completely then recharging to green (which I hope still means "complete charge") has done nothing to recalibrate the battery.
I'm afraid this is a hardware problem. I guess I need to contact Asus?
I'm also having problems with constant browser crashes - doesn't matter what browser it is, I've tried them all. In general, this tablet has been a huge and expensive disappointment.
Edit: I'm running ICS 4.0.3 stock, rooted but not unlocked. I don't want to upgrade to JB because I need the volume booster app. I've read that the volume problem is just as bad under JB but the volume booster apps don't work (nor do many other programs I use). There is nothing in JB I need. From what I've read, people running JB have all the same browser crash problems, battery meter problems, etc.
permutations said:
I have the same problem with my battery meter, and just like with you, it started when my TF700T was almost exactly 4 months old. The batteries (dock and tablet) have to be close to drained. I've been using the tablet without batteries for many hours, both yesterday and today. But my tablet battery is showing 100% and the dock battery is at 95%. That has to be wrong.
I have GSam Battery Monitor Pro. It can only tell me about the tablet battery (it's blind to the dock battery). Yesterday when I looked at this, it was telling me that the screen used no power. I'm looking at it now and it says that screen is using 68.6% of the power - that's more like it. But it's weird that yesterday the number was zero. It tells me that the unit has only been unplugged for 5 seconds, and has been telling me that since I unplugged it yesterday. GSam usually saves history, but not in this case because it thinks the unit has only been running on battery power for 5 seconds.
I also have a battery widget that is dual-battery aware. It has a history chart, but it doesn't tell me much. It shows the tablet battery at a constant level of 100% with no dips, and the dock battery very slowly dropping from 100% to 95% over the last two days. This is just wrong.
What's been happening is that the tablet will suddenly shut down when I think it's charged, and then I can't turn it on. I didn't realize what was wrong until I discovered that if I plugged it in for a while, I could turn it on again. Obviously the battery is draining completely, but the meter is incorrect. Also, draining the battery completely then recharging to green (which I hope still means "complete charge") has done nothing to recalibrate the battery.
I'm afraid this is a hardware problem. I guess I need to contact Asus?
I'm also having problems with constant browser crashes - doesn't matter what browser it is, I've tried them all. In general, this tablet has been a huge and expensive disappointment.
Click to expand...
Click to collapse
I feel your frustration, I have seen more and more people with this issue. Well, we could say that either software or hardware, (not every situation is the same), so usually I recommend to do a factory reset then reflash a full Asus firmware, if the issue stills existed, then we can assume it's hardware issue. At this point, we can give Asus tech support a call.
buhohitr said:
I feel your frustration, I have seen more and more people with this issue. Well, we could say that either software or hardware, (not every situation is the same), so usually I recommend to do a factory reset then reflash a full Asus firmware, if the issue stills existed, then we can assume it's hardware issue. At this point, we can give Asus tech support a call.
Click to expand...
Click to collapse
Thanks for your reply. Have you heard back from anyone who has done a factory reset and reflashed the Asus firmware? Has anyone reported the problem going away after that?
The other thing I'm worried about is that it's a hardware problem that Asus doesn't know how to fix because they don't yet know what's causing it. I can't recall anyone saying they've found a solution to this. I've only seen reports of the problem.
I have other serious problems with this tablet, too. It runs short of memory all the time, though this isn't supposed to happen on Androids. I often have to manually clear memory to view screenshots in the Play Store. And the browser is constantly stalling, freezing, and crashing - every browser. I've tried more than 5 of them. This is especially inconvenient for me, since I make heavy use of the browser on the tablet.
I keep thinking of that pressure-sensitive Samsung tablet I almost bought instead...

Nexus 5 sudden crash

Running kitkat, battery recently replaced. all good for a month.
Yesterday the phone suddenly switched off , i switched it on again and the battery had jumped down about 40%.
It crashed again but then remained stable for the rest of the day.
Tonight (at 50% battery remaining) i got a sudden warning "6% battery remaining" and it crashed again, i switched on again and the battery went back to normal , around 40%, stable since.
Any ideas or is the phone on the way out ?
Did you buy an official N5 battery? It looks like a faulty battery...
This is the one i ordered
https://www.replacebase.co.uk/lg-nexus-5-d820-replacement-battery-bl-t9-original-6818/
Phone seems ok today so far, would wiping the cache be worth a try ?
Thanks for the help.
michaelopolis said:
This is the one i ordered
https://www.replacebase.co.uk/lg-nexus-5-d820-replacement-battery-bl-t9-original-6818/
Phone seems ok today so far, would wiping the cache be worth a try ?
Thanks for the help.
Click to expand...
Click to collapse
It can't do any harm but it won't help in this situation.
Try the following:
1. Let the battery go to 5% then charge your device to 100%
2. Disconnect the cable
3. Reconnect it and check if the battery level is at 100%. If not keep charging. If 100% disconnect and reboot. Then reconnect until 100%
These steps worked for some users (even if steps 1 & 2 should be enough IMHO).
Moreover you can try to remove apps or flash the factory images to check if the problem persists. If nothing works then your last attempt is to send it back to ReplaceBase.
thanks for taking the time to reply, will try your suggestions,
Just had another strange battery drain, captured it on this screenshot.
You can see battery just takes a sudden dive and recovers somewhat.
http://dl-1.va.us.xda-developers.co....png?key=ftn99xdXJLEfZ80y35-hWA&ts=1442328244
michaelopolis said:
Just had another strange battery drain, captured it on this screenshot.
You can see battery just takes a sudden dive and recovers somewhat.
http://dl-1.va.us.xda-developers.co....png?key=ftn99xdXJLEfZ80y35-hWA&ts=1442328244
Click to expand...
Click to collapse
I have just read a nice thread about massive battery drain. Check this out.
His explanations fit with your battery stats.
Thanks for that, will have a browse, but would it explain my phone suddenly dying at 50% ?
michaelopolis said:
Thanks for that, will have a browse, but would it explain my phone suddenly dying at 50% ?
Click to expand...
Click to collapse
I guess. Anyway you should follow the above steps and clean up your device by removing useless apps/features. Finally flashing factory images is sometimes a good thing to start from scratch.
Thanks again
I just tried your first suggestion, charged till 100% then disconnect, it immediately dropped to 99% so i recharged to 100%
Then disconnected and rebooted, weirdly when the phone rebooted it said the battery was now at 19% ,
Back on charge again.
Ugh.... Good luck but I would bet on a faulty battery. You'll probably have to send it back if you can use the warranty.
Did you have the same issue after receiving the new battery? Did you change several things of your setup (kernel, new apps...)?
Going from 100% to 19% can't be explained by the above thread. IMO no apps, no kernel, no software can explain this drop. Some folks say that it can also be caused by the motherboard...
Replacebase have promised to send me out a new battery , they too think its likely a dodgy battery, top customer service so far, hopefully it wont take too long to arrive.
I didnt change anything on my phone, perhaps updated some apps , its stock Kitkat,,, meanwhile Is there any way to check the health of the motherboard ? i don't like the sound of that.
michaelopolis said:
Replacebase have promised to send me out a new battery , they too think its likely a dodgy battery, top customer service so far, hopefully it wont take too long to arrive.
I didnt change anything on my phone, perhaps updated some apps , its stock Kitkat,,, meanwhile Is there any way to check the health of the motherboard ? i don't like the sound of that.
Click to expand...
Click to collapse
Without profesionnal tools we can't check this AFAIK. Don't worry about the motherboard. It was only a suggestion reported by a few users. Chances are your problem will be solved after receiving the new battery.
ok thought as much, battery charged up to 100%, rebooted and now at 60%.
Ill put back in the old battery for now and see how it behaves. thanks for you help

Dies at 20 percent, charge for 5 mins, turns on again is 29%

So my Moto X dies at ~20% charge, which is bad, but not entirely surprising for an 18 month old phone (despite the fact that I rarely use it, which is disappointing and continues to reiterate my point that Motorola QA, before or after Lenovo, sucks). The strange thing is that if I plug it in then, the charging screen on the screen off shows 1%, then 2%. If i turn it on then, the boot is normal, then on lock screen, it shows 25-29%. Any fixes?
try calibrate battery, it happend to me a lot of times and after calibrate doesnt happend, only when i change rom
Update, phone is now being very wonky. See graph for details:
I have the same issue
Same problem here. Xt1097, started 3 months ago. Already wiped battery, delete files, completed charged and discharged. Nothing works. I was running stock when first happened, I changed to custom and the problem persists.
Mine does the same, except at around 14%. XT1095
Same here (xt1097), around 10%. Already tried to calibrate without any success.
Any thoughs on this ?
Same issue here at about 15%. Pretty annoying. Is there any way to adjust the kernel to adjust shutoff voltage or adjust battery so is shows 15% as 0%?
Reporting on the same problem, I'm running CM13
Try this app.
Battery Repair.
Cleiton COUT said:
Try this app.
Battery Repair.
Click to expand...
Click to collapse
Does someone tried it?
The battery is dying.
Usually iphones and samsung phones have the same issue.
Change the battery. Is the only solution(99% of the time).
i work as smartphone technician. Trust me
albatros_1994 said:
The battery is dying.
Usually iphones and samsung phones have the same issue.
Change the battery. Is the only solution(99% of the time).
i work as smartphone technician. Trust me
Click to expand...
Click to collapse
I am afraid you are right... I also have this problem, but not allways and it is very annoying. Do you know where to get a new reliable battery? I also live in italy. In the pass I bought a cheap battery for moto x 2013, but it doesn't charge
niciolaux said:
I am afraid you are right... I also have this problem, but not allways and it is very annoying. Do you know where to get a new reliable battery? I also live in italy. In the pass I bought a cheap battery for moto x 2013, but it doesn't charge
Click to expand...
Click to collapse
Guardalo su eBay http://www.ebay.it/itm/172111017544
Look for original bulk xt1092 batteries
The battery is dying. There's no software capable of fixing this. Replace it.
I solved the problem with a clean instal of stock rom and take the OTAs. I used the phone without root for some days and I completely discharge it, when it shut down I recharged the phone keeping it powered off , when it was charged I turned on the phone and then rebooted it, then I unplugged the phone (I did a battery calibration). After some days I rooted again (latest supersu in systemless mode) and flashed xposed (systemless version 86.2), but I didn't restore all my xposed and rooted crap. Battery life is still quite poor, but the phone didn't shut down at random percentage... I don't know if the issue was caused by some app or root method, maybe restoring stock rom helped, before doing all this stuff I tried just to calibrate battery but didn't solve the problem.
I know it's not really a solution, but I found that activating the system battery saver around 20% helps getting down to 10% without the thing turning off. I haven't tested below that yet.
glauberlima said:
The battery is dying. There's no software capable of fixing this. Replace it.
Click to expand...
Click to collapse
I don't think so, I recently send my moto x to Motorola because it was damaged and they send a brand new moto x and it has exactly the same problem.
cpvm said:
I don't think so, I recently send my moto x to Motorola because it was damaged and they send a brand new moto x and it has exactly the same problem.
Click to expand...
Click to collapse
That's sad to hear.
Battery dying fix
1. Shut down Moto
2. Hold volume down and power button
3. Clear dalvik cache
4. Let it charge to 100%

Gear sport plugin battery drain

Has anyone else experienced more phone related battery drain after the recent UI update? It's not using alot of battery or anything, but I do see the symbol on the phone were Samsung accessory service is in use way more often now. And prior to update, the plug-in never registered at all in my battery usage. So basically it would use under 1% battery for the entire battery cycle. Now, it uses 2-3% per cycle and I've done nothing different with the phone. Has anyone else noticed this and know how to fix it?
I have the same problem after upgrade to new frameware One UI . Super fast Battery drain.
My friend had battery drain after update. A hard reset fixed it.
SimboXXX said:
My friend had battery drain after update. A hard reset fixed it.
Click to expand...
Click to collapse
Reset on the watch, the phone, or both?
mistermidas said:
Reset on the watch, the phone, or both?
Click to expand...
Click to collapse
He reset the watch.
I have got super fast battery drain as well...its so bad the watch drains even when it is turned off...I used to last 2 days without having to charge the watch but now by end of day I am down to 10% or so...really really baffling. I have reset the watch numerous times but it doesn't seem to get fixed...
And firmwares for this watch are so hard to come by...I wanted to do a downgrade...
Moe5508 said:
I have got super fast battery drain as well...its so bad the watch drains even when it is turned off...I used to last 2 days without having to charge the watch but now by end of day I am down to 10% or so...really really baffling. I have reset the watch numerous times but it doesn't seem to get fixed...
And firmwares for this watch are so hard to come by...I wanted to do a downgrade...
Click to expand...
Click to collapse
This is the reason is send my watch in for repair (warranty). It came back with a new motherboard, problem solved.

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