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[Q] battery use - standby

I charged my grab to 100% and put it to sleep, 13 hours later I was down to 53% battery left. Is that much battery drain typical for standby/sleep?

I also saw the same thing when I got my g tablet over the weekend with Viewsonic's updated TnT. I flashed it to the TnT lite 4.2.3, but it seems still the case.

joe2262 said:
I charged my grab to 100% and put it to sleep, 13 hours later I was down to 53% battery left. Is that much battery drain typical for standby/sleep?
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Click to collapse
Unfortunately that seems to be typical for the gtab. Other tablets drain much more slowly. I have been very happy with my gtab aside from the standby battery drain.

Looks like I'll be shutting down instead of sleeping overnight.

http://forum.xda-developers.com/showthread.php?t=862438
Not the first time this behavior has been noted....

I ran VEGn then TNT 4.2.3 and was amazed at how quickly battery drained while sleeping. I just updated to Clems kernel and it is much much better. I don't think it was actually sleeping before, just powering off the backlight/screen...

I agree, I don't think the sleep is actually sleep. Yesterday, I put my gtab to sleep (from the power menu -> sleep). and I still heard a new email sound, running tnt4.2.2, the tab was probably still running all the background services.
Try it yourself.. put it to sleep and send a gmail to yourself (from a pc or phone)..
EDIT: My wifi is set to NEVER, it may be the cause?

I've been thinking about it and wonder if it's the email program? It wants to check the mail every hour which means re-establishing a wifi connection, get the mail then shut off the wifi. And this happens every hour. To bad the gtab isn't like my iPod touch which lets me retrieve the mail manually. Might have to find an alternate email program, any recommendations?

Just wondering. Have any of you tried removing the cellular stand by apks like in this thread http://forum.xda-developers.com/showthread.php?t=855812? Or do the roms you have already not have them? I just ordered a gtab and battery is a big thing for me. I hope this is something that can be fixed.

s14tam said:
Just wondering. Have any of you tried removing the cellular stand by apks like in this thread http://forum.xda-developers.com/showthread.php?t=855812? Or do the roms you have already not have them? I just ordered a gtab and battery is a big thing for me. I hope this is something that can be fixed.
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Click to collapse
I don't see them in stock tent.

well in that thread, they note that the stock tnt and tnt lite doesn't have it. CM and Vegan might

Last night I charged my iPod touch too 100% and set the email to hourly and 10 hours later it still had 96%. I also tried shutting the grab completely off overnight and sure enough there was no battery drain.

I think 4% drain per hour during standby is crazy. It really should be around 1% at the most. My HTC HD2 on android use to use a lot of power during stand by until they figured out how to scale the processor speed down when idle. I hope they can do something similar for the G Tab. I suppose it would take some knowledge of how modify the kernal to do so.

I don't have any roms but just the enhancement pack and same thing the battery drains fast if I leave it just sleeping. I have learned to just turn it off when not using it.

kjmott said:
I don't have any roms but just the enhancement pack and same thing the battery drains fast if I leave it just sleeping. I have learned to just turn it off when not using it.
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Click to collapse
Well, I think I found the issue - at least in VegaN. The WiFi adapter was running at 100% even while sleeping. Just went to:
Settings -> Wireless settings -> then hit the menu button, and choose "Advanced", then select "WiFi Sleep policy" (It was set to NEVER!)
I chose "Never when plugged in".
I just put it to sleep. We'll see what happens.....
FYI: Vegan has an app built in called "Spare Parts" - That's what told me that my WiFi had been on 100% of the time - even while sleeping!

DudeInMyrtleBeach said:
Well, I think I found the issue - at least in VegaN. The WiFi adapter was running at 100% even while sleeping. Just went to:
Settings -> Wireless settings -> then hit the menu button, and choose "Advanced", then select "WiFi Sleep policy" (It was set to NEVER!)
I chose "Never when plugged in".
I just put it to sleep. We'll see what happens.....
FYI: Vegan has an app built in called "Spare Parts" - That's what told me that my WiFi had been on 100% of the time - even while sleeping!
Click to expand...
Click to collapse
I've had my gtab set to shut off the wifi when it's sleeping for several weeks and while it does help there is still way too much battery drain while it's off. I'm absolutely positive my wifi is off when sleeping because I have to wait for it to start back up and connect to my network after I power it on.

tjrhine said:
I've had my gtab set to shut off the wifi when it's sleeping for several weeks and while it does help there is still way too much battery drain while it's off. I'm absolutely positive my wifi is off when sleeping because I have to wait for it to start back up and connect to my network after I power it on.
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Click to collapse
I think that's what's causing the high drain. The email, weather and or news apps poll at least each hour requiring the gtab to start and stop the wifi all night when it should be sleeping?

joe2262 said:
I think that's what's causing the high drain. The email, weather and or news apps poll at least each hour requiring the gtab to start and stop the wifi all night when it should be sleeping?
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Click to collapse
I've tried it both ways and get much more battery drain while sleeping than I'd like. It doesn't appear to start and stop the wifi as you suggest since my email, weather, etc. don't update until I turn it on and my wifi starts up and connects.

Are you running stock TnT?

I'm running vegan 5.1.1

Fast discharging

I896, Rooted, factory Gingerbread.
I have a Captivate and a Tab. Both Wifi only, no Sims, Airplane mode on, Bluetooth off. Machines are on but screen is off. The Tab looses 3% over the course of the morning and the Captivate looses 20%!
I'm running regular 'power user' type apps; Titanium Backup, Tasker, LauncherPro. If there are any apps notorious for secret batt consumption, let me know what to avoid.
Running SystemPanel Lite - I can't see any app that is taking up more CPU time than normal that would explain this kind of drain. The battery page shows a good proportion of battery use display and wifi. In one instance I used the Captivate so little that display showed less use than wifi. In the course of just checking phone power consumption, the display use percent way up, just like expected (Just to show that wifi was really doing almost nothing) and still I had lost more than 15% of battery over the time when the phone was supposedly idle, not connected to anything with the screen off. Some ghost is sucking the life out of my battery. Grrrr. What could it be?
I loose 30% in a night with wifi off, backlight set to absolute min and nothing runninng or syncing.
I don't get it. Any ideas? What do I try next?

get use to it, its androids horrible power management

rsx19 said:
get use to it, its androids horrible power management
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Click to collapse
His tab is running Android too.
If you don't have anything helpful (or knowledgeable) to say don't say anything.
Op, download watchdog from the market, (system panel is kinda ..meh.) and see if there us a rogue app munching battery.
You may consider flashing a ROM see if its just that firmware/kernel reacting to your phone.

Have you tried Juice Defender?
Also, check to make sure you don't have applications constantly running. What version of android are you running? Check in system settings -> status -> somewhere in here you can check the battery status and what applications are pulling the most juice ... From there if one application needs to be removed you can action it ...

Also try the "Battery Calibration" app in the market. It's free.

studacris said:
His tab is running Android too.
If you don't have anything helpful (or knowledgeable) to say don't say anything.
Op, download watchdog from the market, (system panel is kinda ..meh.) and see if there us a rogue app munching battery.
You may consider flashing a ROM see if its just that firmware/kernel reacting to your phone.
Click to expand...
Click to collapse
my captivate running cm7 STOCK will drain down to 20% from being idle for 12 hours
my battery will also drain 30% from 45 mins of wifi only use.
doesnt help him but thats my experience from my captivate

Menu -> Settings -> Wireless and Networking -> Wi-Fi settinngs -> Menu -> Advanced -> Wi-Fi sleep policy
Set it to when screen turns off.
We have to switch that every time we flash. I really wish it was default. Some ROMs also have background data control, but it's usually when wi-fi is on so it shouldn't be a problem.

rsx19 said:
my captivate running cm7 STOCK will drain down to 20% from being idle for 12 hours
my battery will also drain 30% from 45 mins of wifi only use.
doesnt help him but thats my experience from my captivate
Click to expand...
Click to collapse
You do know that cm7 doesn't have the proper hardware drivers from Samsung so the battery life is known to be HORRIBLE right? If not you should really read up on the ROM you're using
Flash any touchwiz ROM, especially a native I897 build and you will see a dramatic increase in battery life.

studacris said:
You do know that cm7 doesn't have the proper hardware drivers from Samsung so the battery life is known to be HORRIBLE right? If not you should really read up on the ROM you're using
Flash any touchwiz ROM, especially a native I897 build and you will see a dramatic increase in battery life.
Click to expand...
Click to collapse
I'm on CM7 and am going on 27 hours with moderate usage.. Granted, I have the 1800 mah battery from the Sprint Galaxy S2

trying flashing to pinnacle. I too have battled weird captivate drain issues.
if you wanna try CM, read my thread:
http://forum.xda-developers.com/showthread.php?t=1364357

I've held off replying as I was trying a few things and figured I would report only once I was done.
I found and ran Battery Calibration, just before I read the post. Between that and turning Wifi sleep policy to off with screen off, I had a great weekend. I was getting a day and a half out of my phone, which considering the use, was very acceptable. I was getting about the same drain as my Tab. I had 1% battery drain after 4 hrs of screen off time. That seemed fine for me.
I got back to school where I teach and yesterday the phone drained as fast as it has before. Interestingly, it continued its rapid drain even after I left the school and went back home. So, it died at 4am this morning. I heard it shut down. The school has at least 4 routers, two of which have 5k access options. I know if I choose them, my laptop drains way faster. Is there a way to limit my wifi connection on the captivate and not use the faster 5k connection?
But, this still doesn't explain why, even after I leave the school, the Captivate continues to drain when it is 10ft from a single 100mb wifi router.
I'm almost ready to try a custom Rom, but not sure how that will affect my ability to use it as a phone, once I get my Sim activated. Still new to this all.

You think everyone running a custom ROM doesn't use the phone?
Shouldn't affect your ability to do anything...

The WiFi and cell radio do increase power on lower signal as we know, but that's not always the cause of drain. I remember times using Froyo when kswapd goes nuts for no reason, or trillian, email, twitter or some other app just starts using massive CPU. Many apps are probably never tested on a system that has no connection most of the time. That's where all the utilities come in handy to find the culpret. OSMonitor can help find CPU hogs. TiBu can freeze apps, or uninstall them temporarily. Juice Plotter can monitor drain over time (newer Androids have something like it built-in). It takes some time to find it, but newer versions of the OS make it easier and have less trouble.
Also the battery % is only estimated. I'd trust full to empty time rather than 90% to 80% time as 10% use since it's not really as linear as we think.

Not to point out the obvious, but it can be the battery itself that has the problem. They aren't exactly manufactured to NASA standards... well, maybe their standards lately, but the point is, sometimes the ghost you're chasing is staring you right in the face.

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.
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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. ;(

Quick battery drain & constant data being sent since 1.78 OTA

Hi,
I've got an HTC One S since a few weeks (got it with the 1.57 FW I think). It's a stock one, not from a carrier. No branding.
The battery life was great, 2 to 3 days with normal use.
But yesterday evening I proceeded to the OTA update and since then, trouble began
Battery life is much, much lower. After 12 hours standing on my desk in the office, I got 10% remaining!
Anytime I switch the screen ON, I see there is some data being sent (or received) because the "arrows" are full. If I check in system panel lite, there's always 1 or 2 kb/s of traffic.
Also, the phone is a bit warm, quite often.
Has anyone else noticed this? That's rather annoying :/

Could be faulty? I have the same phone with no carrier or branding and not had any problems at all.

Like faulty hardware? Seems unlikely to me since it worked well with 1.57. Also, sending data isn't hardware related

Here are some details.
In Mobile usage, just for today (less than 24h)
"Media" has used 13MB of background data
"Android OS" has used 5MB, also background
Android OS gives no more details. Media is told to include "Download manager" "DRM protected content storage" "Media storage" and "Downloads"
This sounds like a lot of background data :/

Try an app called Badass Battery monitor. It should tell you what's eating your battery.
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm
Sent from my rooted and debloated T Mobile HTC One S

I have to say, this phone, at least mines, seems to have a pretty bi polar battery. It's got a case of ADHD.
For example, just the other day, I had the phone fully charged when I awoke at 9am, after playing Temple Run, surfing the web, using GPS, streaming and listening to music, playing more Temple Run, fiddling around with the OS, checking emails, sending texts, talking on the phone a bit, downloading apps, with about 25-30% brightness, I ended up with 18% battery remaining after a good 11 hours of very heavy use. I was quite pleased, considering the inordinate amount of usage I had with the phone all day.
(BTW, I use Juice Defender, which has helped tons in reducing battery drainage for almost every phone I've owned in the past 3 months, including the One S)
Yesterday, I had the phone charged at 100% when I awoke at 9am, with a little bit of use, by 12am, I had 63% remaining, same brightness, but with much much less use then the day prior. By the time 3pm hit, I was at about 30%, and by 5pm, it was drained to 18%, mostly on standby. By my estimation, that's 8 hours of usage, same brightness levels as the day before, using Juice Defender, but with much much less fiddling around with pretty much everything on the device.
I went ahead and disabled Juice Defender today to see if it would make a difference, and the battery actually got a bit worse, so I went ahead and re-enabled it and it immediately improved.
So I'm a bit perplexed, I haven't gotten any official updates, still running on the original stock build, but ultimately, I guess this is what is too be expected with an early build. Hopefully future updates WILL fix these issues and not hinder them more. Granted it's still much better then my HTC Amaze and Galaxy Nexus, which drained 4% the moment I took them off charger.

Thanks for your input, I'll check again today how the phone goes.
I played with all the settings and menus yesterday, and found something strange. In the "downloads" app, there was a "system update" download. That's quite normal since I downloaded and applied the OTA the day before. But it was referred as "ongoing", like it was still downloading a part of the OTA zip file AFTER I applied it (and rebooted a couple of times)
In phone settings, about, updates, it was also written "ongoing"
Now this is over (I don't know why and how) and the network usage seems back to normal. I'll try today to see how the battery drain is
Anyway, it's s strange the phone was still downloading the update zip file after having applied it. AND that it was downloading it on the 3G at a very lowered bitrate (like background) while I downloaded it on the wifi the day before
Anyway...

The battery life of my One S seems to have declined as well since the update. Before the update my battery lasted 2 days easily with moderate usage. Now I have 20-30% left at the end of the day from a full charge since 9am. This is with very light usage (mostly on standby from 9 to 5).
I did turn on best wifi performance recently so I just to turned that off to see if it helps but I really doubt that.

Hello guys, I have same problem, but my phone wasting energy on "phone radio" process, just look at screens below. I tried using stock Rom with last update, trickdroid, and now it happend on leedroid v.2 . Btw I changed 4 micro sim cards with several providers, but no result. I really need help with this issue, because my battery draining very very
fast...
Thank you
Sent from my HTC VLE_U using XDA

I had a similar problem a few days ago, using Lee´s ROM.
I noticed that the drain had something to do with autosync. As soon as I turned off autosync (leaving mobile internet on) drainage went back to normal.
I still don´t know what caused this since I only had the google account, weather and dropbox installed.
Anyway, after doing a fresh install, the problems seem to have gone.
Of course I can´t be completely certain of it until some more days of testing/usage.

I also noticed quite a few problems since the latest OTA update.
Not only does the battery drain fast, the phone also feels extremely hot when browsing on 3G.
The phone does cool down pretty quickly when turning off 3G but it feels like I burned my hands
Here are a few screenshots.
http://dl.dropbox.com/u/52039330/2012-05-10_13-46-08.png
http://dl.dropbox.com/u/52039330/2012-05-10_13-51-52.png
http://dl.dropbox.com/u/52039330/2012-05-10_13-59-10.png
I also experienced weird things when connected to EDGE (2.75G).
3G (HSPA) coverage on BASE (KPN) sucks in Belgium
Look at the video below for more details.
Has anyone else experienced this yet?
http://youtu.be/3g8FLpWDAYM
I also contacted HTC about this issue and they recommended a hard reset.
Unfortunately this doesn't help at all, I still get these weird glitches

mattionline, can you get a logcat when the phone's doing this weird stuff? It looks like the Home button is being pressed repeatedly and if logcat confirms it then it's probably a hardware problem.

keinengel said:
mattionline, can you get a logcat when the phone's doing this weird stuff? It looks like the Home button is being pressed repeatedly and if logcat confirms it then it's probably a hardware problem.
Click to expand...
Click to collapse
Do you need root to make a logcat ? My phone is not rooted and I'm not planning to do it. How can this be a hardware problem ? I never had this problem before. I'm sure that it's a software bug.

Bricolo_fr said:
Here are some details.
In Mobile usage, just for today (less than 24h)
"Media" has used 13MB of background data
"Android OS" has used 5MB, also background
Android OS gives no more details. Media is told to include "Download manager" "DRM protected content storage" "Media storage" and "Downloads"
This sounds like a lot of background data :/
Click to expand...
Click to collapse
I just fixed someone else phone that had the exact same symptoms. In the end I narrowed down the problem to one of his weather apps.
He had a live wallpaper that reflected the current weather, weather on his lock screen and a beautiful widgets weather thing. I never did figure out exactly which one it was I just turned off all there and told him he was crazy.
I don't know if it's something "weather" related for you but it maybe it will help.

mattionline said:
Do you need root to make a logcat ? My phone is not rooted and I'm not planning to do it. How can this be a hardware problem ? I never had this problem before. I'm sure that it's a software bug.
Click to expand...
Click to collapse
you don't need root, just enable usb debugging in development options and connect the phone to your pc. You need to have the android sdk installed.

Sup guys , some of you don't seem to realize that there are many reasons why your battery drains, what you might think is, "quickly". A few tips to keep minimal battery out put...1 keep brightness down, the screen itself sucks juice probably the most. 2 check your apps, some apps send and receive data and/or are kept running in the background. You might have to enable/disable setting on shove apps. 3 widgets, widgets like battery meters, CPU meters, things like this constantly refresh to keep real time info. That also eats up alot of juice . 4 Turn off WiFi or any other thing like that when your not using it. WiFi continually sucks nice. Lastly, invest in some app that will help you close apps. Basically, tweek everything you might think that the os can run without. The less your CPU has to do, the more juce you save.
Sent from my HTC VLE_U using XDA

dc211 said:
[...]I just turned off all there and told him he was crazy.
Click to expand...
Click to collapse
This made me lol hard.
Best advice ever.
But yeah, on the 1.0 version of Leedroid I had quite some drain, too.
When I turned off autosync it went back to normale. I only had my google account, dropbox (with syncing off) and the weather thingy set up and never figured out which one was resposible.
After installing Lee´s 2.0 ROM everything is fine.
I suppose there really is something wrong with the autosync and maybe with the weather stuff in particular.

My problem didn't go away with stopping auto sync, even without it, I had a constant data flow
Anyway, I rebooted the phone twice and the issue was gone.
It happened again a few days later, after the phone did shut down because of low battery. I put it on charger and turned it on, then, I noticed the 3G arrows were always on. After I unplugged it from the charger the battery went down in 10 hours. After a reboot, problem gone...
Since then, nothing...

And please note than when the problem is here, it's media and android os using a lot of data

I have been having one S problems too - I am on my second phone after the first one became reliably unresponsive every time I turned on mobile data. More relevant to this discussion, my battery died shockingly last night. Normally it drains at a few percent an hour when I am not using it (i.e. when asleep!) but I woke this morning to find it totally dead - that is 30% plus gone in 5 hours without it being in use.

Very High Android OS battery usage

I recently received an Nvidia Shield and updated it right away to 4.4.2.
Today I noticed that overnight the Android OS was taking up a large portion of the battery life. The Shield's Android OS used 70% of the battery while my Nexus 4 usually only uses 12% or so.
I'm not sure if this is because it's a new install or going to be a persistent problem.
Has anyone found out why this is or have a solution to fix it?
I don't want to disable multitasking. I'm probably also not going to root the device anytime soon just in case this is a real problem and I need to RMA it. I have disabled Wi-Fi when the device sleeps.

Actually, now that I'm looking at the screenshots again, it seems the battery stats aren't reporting the other apps I was using. Maybe it all got combined into Android OS somehow? I checked my Shield again and the games and apps I was using are shown and the % of Android OS seems to be going down.
I hope this was a fluke, but it'll be a few more days before I know for sure.

It seems it might have just been a weird glitch in the way the battery stats was shown.
Today I checked my Shield and it only used 3% battery life overnight with Android OS only using 9%. All the other apps also stayed visible on the list of apps.

Last night I turned on "Keep Wi-Fi on during sleep" again since it's actually pretty annoying when I'm trying to download something on the Shield and it gets cancelled when it goes to sleep.
I had 30% battery life when I went to bed and the Android OS battery usage was a low 12%.
I woke up with the Shield having 30% battery life still, but the Android OS battery usage shot up from 12% to 45%.
I went out for 30min and came back and the Shield had 32% battery life.
I used it for a couple of minutes and battery life dropped to 25%.
I have no idea what the heck is going on with the battery stats. I'm probably going to see what happens tonight and if the Android OS starts to get really high again I'll then turn off "Keep Wi-Fi on during sleep" for a few nights to see if that's really what's causing it.

Outrager;541903Last night I turned on "Keep Wi-Fi on during sleep" again since it's actually pretty annoying when I'm trying to download something on the Shield and it gets cancelled when it goes to sleep.
I had 30% battery life when I went to bed and the Android OS battery usage was a low 12%.
I woke up with the Shield having 30% battery life still said:
No live wallpaper? Or gpu rendering in dev options?
Click to expand...
Click to collapse

mudflap2.0 said:
No live wallpaper? Or gpu rendering in dev options?
Click to expand...
Click to collapse
Using the stock wallpaper. I think it's just an image.
Force GPU rendering is off. All the Dev options are default.

I'm interested to know if this ever gets resolved. I'm experiencing the same thing, just a tad more extreme. Android OS taking 95% battery. Been on the wallcharger more than a day, i wake it up and its at 45% charge. Stock, non-rooted, no Dev options enabled. I have a sneaking suspicion its related to Google Play services, but have no way of knowing.
Sent from my Nexus 5 using Tapatalk

brianj1970 said:
I'm interested to know if this ever gets resolved. I'm experiencing the same thing, just a tad more extreme. Android OS taking 95% battery. Been on the wallcharger more than a day, i wake it up and its at 45% charge. Stock, non-rooted, no Dev options enabled. I have a sneaking suspicion its related to Google Play services, but have no way of knowing.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
So after doing a factory reset and getting the same results I finally decided to just unlock my bootloader and root the Shield. I did contact my 3rd party insurance company first to make sure they would still cover any hardware faults if I did that.
Anyway, unlocking the bootloader meant a factory reset too. Well instead of Android OS taking up the majority % of the battery life it became Wi-Fi that was doing it.
I thought it might be the battery so I ran it down to 0% then while charging it back up I just said, "Screw it," and started fresh using the Recovery OS Image from the Nvidia site.
SO FAR, it seems to be much more normal in terms of the battery stats.
What's weird is Android OS and Android System have swapped positions compared to the way my Nexus 4 is.
It'll probably be another day or two when I use the Shield some more before I can make sure it's all better.
Update:
Nevermind.
Overnight Wi-Fi and Android OS shot to the top of the battery usage.

Outrager said:
So after doing a factory reset and getting the same results I finally decided to just unlock my bootloader and root the Shield. I did contact my 3rd party insurance company first to make sure they would still cover any hardware faults if I did that.
Anyway, unlocking the bootloader meant a factory reset too. Well instead of Android OS taking up the majority % of the battery life it became Wi-Fi that was doing it.
I thought it might be the battery so I ran it down to 0% then while charging it back up I just said, "Screw it," and started fresh using the Recovery OS Image from the Nvidia site.
SO FAR, it seems to be much more normal in terms of the battery stats.
What's weird is Android OS and Android System have swapped positions compared to the way my Nexus 4 is.
It'll probably be another day or two when I use the Shield some more before I can make sure it's all better.
Update:
Nevermind.
Overnight Wi-Fi and Android OS shot to the top of the battery usage.
Click to expand...
Click to collapse
Not more than a week and a half ago, I did a factory reset on my Shield, for reasons unrelated. I was running into problems where the thing would randomly reboot in the middle of playing games. I attributed it to issues related to moving games to SD.
After the reset, and re-install of everything it has been running rock solid, it's only past few days this battery drain started being an issue. Last night I went through and unchecked 'show notifications' for any and all downloaded games, not sure if that makes a difference really. The thing sat on the charger an entire night, and in the morning it was still only at 52% charge, Android OS still being the top offender.
I've turned location OFF, and set WIFI to off during sleep. Going to see how the battery looks after a few more hours. If I was more adventurous I'd root, and install a wakelock detector, but I'm just not that motivated. I'm hoping if I ignore it the problem will work itself out eventually. Not sure what to think, none of my other Android tablets or phone are experiencing this phenomenon.

brianj1970 said:
Not more than a week and a half ago, I did a factory reset on my Shield, for reasons unrelated. I was running into problems where the thing would randomly reboot in the middle of playing games. I attributed it to issues related to moving games to SD.
After the reset, and re-install of everything it has been running rock solid, it's only past few days this battery drain started being an issue. Last night I went through and unchecked 'show notifications' for any and all downloaded games, not sure if that makes a difference really. The thing sat on the charger an entire night, and in the morning it was still only at 52% charge, Android OS still being the top offender.
I've turned location OFF, and set WIFI to off during sleep. Going to see how the battery looks after a few more hours. If I was more adventurous I'd root, and install a wakelock detector, but I'm just not that motivated. I'm hoping if I ignore it the problem will work itself out eventually. Not sure what to think, none of my other Android tablets or phone are experiencing this phenomenon.
Click to expand...
Click to collapse
Setting Wi-Fi to turn off during sleep does sort of help keep Wi-Fi battery usage down, but I just find it so inconvenient.
I just rooted and have BetterBatteryStats installed. The Kernel Wakelock category doesn't show anything for some reason and nothing unusual about the Partial Wakelocks.
The only unexplained thing is a Process called migration/0 that has been on for 15h 15m 6s even though the device only shows an uptime of 13h 1m 26s. A quick Google search says, "The migration kernel process distributes workload across CPU cores. You should have one migration process per processor core." so I guess it's normal?
Also, while typing this, my Android OS battery usage shot up to 80% and my Wi-Fi is now at 10% which is still higher than the Screen on usage of 7%.
I also just used ROM Toolbox Pro to freeze all the Nvidia system apps, like NVStats and TegraZone, to see if that will help at all.
I have this feeling that it is Android 4.4.2 that is causing the problems and I hope Nvidia at the very least updates to 4.4.4.

I've been reading some more articles and there are some that point to the external SD card being the culprit of the battery drain.
It seems to be that Media Scanner is trying to constantly scan the external SD card.
I'm not 100% sure if it is the cause because on my side I don't have the Mediaserver using any battery.
The next time I fully charge my Shield I might try removing the MicroSD card to see if that is causing it.

Outrager said:
I've been reading some more articles and there are some that point to the external SD card being the culprit of the battery drain.
It seems to be that Media Scanner is trying to constantly scan the external SD card.
I'm not 100% sure if it is the cause because on my side I don't have the Mediaserver using any battery.
The next time I fully charge my Shield I might try removing the MicroSD card to see if that is causing it.
Click to expand...
Click to collapse
I'm not sure removing the SD card changed anything.
I did notice a process in BetterBatteryStats called migration/0 that is very high usage and I have no idea what it is for or how to stop it.

Okay, so I think I've found the cause of the high Android OS battery usage.
First my solution:
In the Settings -> Accounts -> Google -> (your account)
Leave Sync enabled, but ONLY check "App Data", "Chrome", and "Google Photos Auto Backup". Leave everything else un-checked.
Set Wi-Fi to turn off when the Shield goes to Sleep.
*I haven't bothered to test individual sync option, but those are just the 3 I left checked. You can try it yourself to see which one is the real culprit. My best guess is it is Calendar syncing that is causing the problems.
*Do not just disable Sync. I found that did not help at all. I don't know why.
*I don't know if it's my router or the Shield, but Wi-Fi also uses way too much battery when asleep. I can see that it is going into deep sleep too. Setting Wi-Fi to turn off when the Shield goes to sleep drastically lowers the Wi-Fi battery usage. Fun fact: The Wi-Fi stays on for 20 minutes after you turn off the screen before turning itself off.
After un-checking a bunch of the syncing options my Android OS battery usage went down to 20% for a 20 hour period compared to the 70% or so it was using the day before I did it.
The "migration/0" process no longer shows up at the very top in BetterBatteryStats. If it is showing up, it is <10sec of usage.
After 20 hours, with about 35min of 3D gaming and 40min screen on time, the Android OS battery usage was using 20% with 30m30s of CPU Total. I also spent about 10min transferring files using AirDroid then moving them to the SD card.
The battery life dropped from 100% -> 84% in those 20 hours. I think I would have had battery life closer to the Anandtech review if I was just doing 1 thing consecutively and not gaming then using the Wi-Fi to move files. I might try that one day, but most likely not.
I hope this helps for everyone having the same problem as me.

Outrager said:
Okay, so I think I've found the cause of the high Android OS battery usage.
First my solution:
In the Settings -> Accounts -> Google -> (your account)
Leave Sync enabled, but ONLY check "App Data", "Chrome", and "Google Photos Auto Backup". Leave everything else un-checked.
Set Wi-Fi to turn off when the Shield goes to Sleep.
*I haven't bothered to test individual sync option, but those are just the 3 I left checked. You can try it yourself to see which one is the real culprit. My best guess is it is Calendar syncing that is causing the problems.
*Do not just disable Sync. I found that did not help at all. I don't know why.
Click to expand...
Click to collapse
Thanks for this pointer.
I was also facing significant CPU consumption by the real time kernel process migration/0 on my Googy-Max-1.7.9 kernel.
I turned off the calendar sync and this seems to have fixed the issue. Now I am only syncing App Data, Contacts, Gmail and the others [browser, Calendar, Chrome, Chrome Beta and People details] are off.
Related thread: http://superuser.com/questions/416779/linux-migration-n-high-cpu-consumption