Develop Bugs

(TIP)Possible battery drain solution for LTE devices.

Like many here I've been having battery drain issues since the day I purchased the Galaxy Nexus. I also purchased the extended battery since day one. I've been reading through every single forum on how to reduce the battery drain and none seems to have worked for me. I've tried switching to wifi, 3g only, no email push, no google+, etc and my phone at 100% battery would lose almost 30% within 2 hours idling. Then I was looking at the settings and I came across the Developer Options/Background process limit and limited my background process from Standard to At most limit to 1 process and my battery has improved tremendously. Prior to making the change the Android OS was using 80+ % on idle (Wifi or 3g didn't make a difference), now it's uses around 20 or less. On idle I'm seeing around 4% or less an hour vs 15% battery drain.
Please remember this may or may not solve YOUR battery drain, but it has definitely helped mine and I just wanted to share with the community on what else you can try.

I've had pretty good results with my battery. I think some of ya'll are either just playing around with it too much or have some energy-sucking apps out there.
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Cheyse said:
I've had pretty good results with my battery. I think some of ya'll are either just playing around with it too much or have some energy-sucking apps out there.
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Or that you don't have a connection to the data network.
Just say'n. (I do the same thing at night)

I had Wi-fi enabled for 12 hours, and the battery only dropped to around 85%. I have been on 4G for 5 hours now, and the battery is now down to 13%. I'm going to use a Wi-fi/3G combination tomorrow. Oh and I also have my phone rooted/underclocked to 900Mhz.

Cheyse said:
I've had pretty good results with my battery. I think some of ya'll are either just playing around with it too much or have some energy-sucking apps out there.
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/397858_10100550605299635_27421897_51271764_409359273_n.jpg[IMG][/QUOTE]
Light use with very little screen time from the looks.
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cvbcbcmv said:
Remember things in the dev section are there for a reason, this could cause other issues.
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I've been using it for 3 days and have had no issues. Anyways its as easy as checking the standard limit if you ever wanted to revert back.

[Q] Battery issue?

Here's a screenie from my battery screen, I know the battery is a common problem, but when I see shots from others battery screen their screen and OS percentages seem much lower. My screens set at about 20-30%. Just wondering if I'm doing something wrong, or any suggested apps/roms you have. Rooted CDMA.
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Sent from my Galaxy Nexus using Tapatalk

Te longer you have the screen ON and are using the device then the more power it uses over a period of time

Tap on the screen % to see your screen on time. This device currently sucks a lot of power through the high pixel display. You can switch to manually adjusting seen brightness to save some battery.

irb123 said:
Here's a screenie from my battery screen, I know the battery is a common problem, but when I see shots from others battery screen their screen and OS percentages seem much lower. My screens set at about 20-30%. Just wondering if I'm doing something wrong, or any suggested apps/roms you have. Rooted CDMA.
Sent from my Galaxy Nexus using Tapatalk
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Looks fine to me. My android os is usually around 15% or so depending on how much I use the phone and I get great battery life.
Sent from my Galaxy Nexus using xda premium

@rbiter I am curious how long has your Galaxy Nexus been running before it turns off? I have gotten about 8.5-9 hours the one time i ran mine all the way down. That is with auto brightness on and lots of browsing and no games and some calls.
Frankly I have been disappointed with the battery performance so far. I love the phone of course, but just wished they would come out with replacement stock batteries so I can go as long
as i need, without having to swap out the backs etc.

@rbiter I am curious how long has your Galaxy Nexus been running before it turns off? I have gotten about 8.5-9 hours the one time i ran mine all the way down. That is with auto brightness on and lots of browsing and no games and some calls.
Frankly I have been disappointed with the battery performance so far. I love the phone of course, but just wished they would come out with replacement stock batteries so I can go as long
as i need, without having to swap out the backs etc.
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You could always just use the extended battery w/ the extended battery back cover. That cover works also fits pretty well with the stock battery.

Did I get a defective battery?

Just got my s3 like a week or so. I made a mistake and not charge it initially (thought it was a myth). I used my battery all the way to 17%. Now my battery only average up to 2 hours screen on. My sister who also got the phone as the same time has about right hour screen on time. Did I screw up or it's just my battery being defective
EDIT: attached is the battery stats
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What's brightness set to, and what are you doing while the screen is on? You on WiFi most of the time?

mt3g said:
What's brightness set to, and what are you doing while the screen is on? You on WiFi most of the time?
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Well, when I'm in door, I use low brightness most of the time. Only when I'm outside I would use auto brightness. Since I'm in wifi zone most of the time, yes I do have wifi on. I mostly use my phone for twitter, web browsing, and youtube, nothing heavy like gaming or benchmark.

Hard to say if its defective but I've definitely seen a lot better battery. It might not hurt to try and get a new one.
Sent from my SGH-T999 using xda premium

you should calibrate your battery a couple times once you get the phone. do it a couple times and it will fix itself. also check all your syncing settings. this phone will deplete a battery in 5-6 hours if fully charged and phone brightness is up all the way while watching videos.

Calibrating batteries is a myth from the days of older battery technology. Draining your battery to 0 on purpose is actually killing your battery faster because you just used up one cycle.

gr4p3s said:
Calibrating batteries is a myth from the days of older battery technology. Draining your battery to 0 on purpose is actually killing your battery faster because you just used up one cycle.
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I think you're right
Sent from my SGH-T999 using xda premium

There's a bug on stock that makes cell standby much higher than it really is. So I wouldn't worry too much about that.
Also, Google Chrome is a huge battery killer for some reason. Consider switching to a different browser?

Still having the original battery in my vibrant and getting 8-9 hour charges while killing the battery 100% and charging it up once a week does nothing? Same thing for my g2x. I get about 10-11 hours on the thing daily original battery as well. If anything and you're not rooted to delete battery stats, its a good thing to do a couple times. I don't think I have hurt the battery at all, and if anything they still last very long...
Sent from my SGH-T999 using xda app-developers app

Battery drain on 4.2.2

Been having battery issues ever since I flashed a 4.2.2 ROM.. I think its the modem. Being on like over drive, draining my batt.
Or is it 4.2.2? I tried all the 4.2.2 Roms that there is for our phone. And its seems to drain at the same rate every time. I don't know of its just me or can my radio be the cause of it. Or android 4.2.2??
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I have great battery life.... Try ktoonsez kernel with your rom. I'm also using ktoonsez battery control in ktweeker with CPU profiles and also using CPU sleeper app.:thumbup:
Sent from my SGH-T999 using xda premium

i hope this can help you
http://rk00064.blogspot.ro/2012/04/all-android-tweaks-in-single-flashabble.html

Battery Drain......?! Try Battery Not Holding Any Charge!
I've kind of got a similar problem. Can't quite figure out what is causing it though. Everything was fine until I updated to tha latest nightly last night. It slowly took a nose dive after that. It actually died all the way out on me while sitting plugged in. Now, as I stated in the title, it won't hold any sort of a charge whatsoever. Every once in a while I can get it to boot up but almost instantly it shuts right back own. Can't seem to boot into recovery either, but have gotten it into Download Mode pretty easily. That's where it'll remain on for the longest duration, but still not long enough to be able to reflash anything to it. The battery state check said the battery health was good all the way until it completely died on me the first time. There has been no moisture or other damage done to it in an kind of way either. Any ideas as to what exactly the issue at hand may be?

Sounds like it might be your battery...know anyone with an s3 that you can use there battery for a bit to see if it charges...if so then its your battery if not might be the ROM or phone.
Sent from my SGH-T999 using xda premium

I'm running the most recent PACman ROM, which is 4.2.2 and what I do is set my governor to interactive and my I/O Scheduler to SIO. Running stock kernel at the lowest min and highest max, I can get almost a day and a half out of a charge. My trick is to toggle things when I'm not using them. I mean all the time. Screen brightness never above halfway, no haptic feedback, no live wallpapers, and I'm always clearing my recent apps. I don't know if this'll help you any but that's my battery saving procedure.
Sent from my SGH-T999 using xda premium

I really don't know anyone with an s3. Seems Apple has everyone around here convinced they're better. HA HA! That's a great laugh! Seriously though, there is a used cell phone shop I'll go talk to though. As for my kernel settings go I run interactive, on demand, 648 & 2100, under volt everything 100, and either raise or lower all other settings within one point from the least or maximum it could be. Been running that since I got the phone in September without any problems battery wise whatsoever. I'll start with checking the battery though and see where that journey leads....... Thanks for the thoughts and suggestions.

Major Battery Drain Help!! (100% -> 0% in < 5 hrs)

Firstly, I am fully stock in every way. I have been getting abysmal battery life from my phone.
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Obviously I'm aware that the culprit is lookout.. i do like the services offered by lookout and would like to keep them. Disabling lookout does fix the problem but I'm wanting to hear potential causes and/or fixes..
Thanks for your time.

Which of the features does it offer you "like". Many times there are other alternatives for those "features" without the drain.

Im using lookout with no major battery drain. Looks like your wifi was on all the time. Low wifi signal may cause for wifi radio to broadcast with higher power. Smart stay will trigger camera every few seconds. Personally I use "Screebl" from play store - it keeps screen on by checking if phone is not laying flat. Install "better battery status" (need root for that) and it will allow you to see which app or service keep phone awake. Turn on power saving mode. In settings turn off wifi while sleep mode.
Sent from my SGH-T889 using xda app-developers app

Try one power guard https://play.google.com/store/apps/details?id=com.onexuan.battery. and or Snapdragon battery guru. https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app...... also I deleted lookout since i also had crazy batter drain I went from 100% to 88% in 45 minutes.
Sent from my SM-N900T using Tapatalk

Thanks to those who replied. . However none of the answers have helped. .
Like I said, I am hoping to keep lookout as an unrooted stock user .. for now.
What isn't adding up is the fact that most users are reporting no issues with lookout draining battery..
So why am I having problems ??
As for weak wifi, that's not an issue.
Other ideas ??

I had the exact same issue. The only way for me to stop that was to uninstall it unfortunately
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Don't use lookout.
sent from my sm-900t.

Tried factory reset?

Be done with lookout
NOTE 3

Lookout Isn't doing that for me maybe a update is needed?
Sent Via Tmobile note 3

I keep finding Play Music running on its own and eating battery quite often. Maybe that's the culprit? Was happening lately on my Note 2 as well.

I had this issue just after using Root de la Vega. My battery was going completely dead after about 4 hours with light use and the phone was getting really warm like the CPU was pegged the whole time. I did a factory reset and have all the same apps installed and my phone now makes it easily through a 10 hour workday and 45 minute commute with heavy use (5h screen time). Try that if you haven't.