Develop Bugs

Battery life

This phone is only lasting me about 8 hours before my battery will die. What can I do to help out my battery?
Sent from my SPH-D710 using XDA App

download an app call battery calibration, then after a full night of charging, go to that app and calibrate with the charger plug still in, after its done reboot phone and take it off the charger. drain the battery until it shuts off by itself. charge it back up while its off. then continue to use as normal. wait a couple days to see if the battery gets any better. my phone doesnt last too long either, im thinking of replacing the battery to see if thats the problem

Try removing some apps, that worked for me there was some apps that were sucking up my battery.
Sent from my SPH-D710 using xda premium

slap on a extended battery!

Kiss it three times, say two Hail Mary's and toss it over your left shoulder.
No seriously, battery life is very dependent on many things, and your statement doesn't come close to providing enough information for anyone to give you any real help. At minimum you need to provide the following during your 8 hours ...
- Total Display on time
- Brightness setting
- What you have auto syncing and how often
- Average signal strength
- Usage pattern (web browsing, calls, streaming video, etc.)
- Widgets on your home screens
- Screenshots of your battery usage and graph

My phone will also last around 8 hours if im constantly using it.

Thanks everyone for the responses. I will try out all the advice.
Sent from my SPH-D710 using XDA App

wxcolon said:
Thanks everyone for the responses. I will try out all the advice.
Sent from my SPH-D710 using XDA App
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With moderate use, I get about 20 hours. With heavy use I get about 10-12. It's still enough to get me through the day
Love this phone!

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This is my battery after heavy use. I love the battery. Calibrated.
Sent from my SPH-D710 using XDA App

[Q] android OS

in the battery usage graph what does the android OS include? and i've noticed on this phone it takes up ALOT of battery, why is that? is there a way to "cool its jets"?
i dont know if this matters but im rooted and running the STARBURST ROM.
thanks for any and all info that you could give me

HAHA it's Android. Things that are required for Android to run. The way to fix it would be to buy a dumb phone without Android.

Im having this problem as well with cm7. Android OS being the top consumer killing by battery.

I have been having this problem for about a week now (stock ROM). This is after a full charge the night before and I took the screenshot in the morning.
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kjgear said:
I have been having this problem for about a week now (stock ROM). This is after a full charge the night before and I took the screenshot in the morning.
View attachment 856821
Sent from my SPH-D710 using xda premium
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You will always have high Android OS until you start using the phone. After a full day's use, it should read 20-25% if your setup is dialed in. It will show less with Rogue kernels. They have it masked somewhat
Sent from my Nexus S 4G using xda premium

All this is normal...
Sent from my SPH-D710 using xda premium

Switch to calkulins rom 2.8.1. Its great

JohnCorleone said:
You will always have high Android OS until you start using the phone. After a full day's use, it should read 20-25% if your setup is dialed in. It will show less with Rogue kernels. They have it masked somewhat
Click to expand...
Click to collapse
But the phone was down to 85% power just sitting overnight.
Is that normal? (Serious question, not being a smart-ass.)

blackte4 said:
Switch to calkulins rom 2.8.1. Its great
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Click to collapse
Not for me it wasn't lol, way slower than stock, and i was out performing quadrant and linpack tests on stock.

Going down %15 overnight sounds typical. Are talking like 8-10 hours?

It"s "typical," but it is NOT what this device is capable of.
The Android OS usage is not supposed to happen. It's a bug, albeit an omnipresent and seemingly unkillable one. There is nothing you can do about it except reboot and hope it doesn't re-trigger.
Without triggering the bug, I was able to sleep for eight to ten hours and drop about 2% in that time frame. THAT is what this device is ACTUALLY capable of.

How is everyone finding the battery life on CM10?

I would have asked this in the thread, but I'm new so can't make posts there. Anyways, for me it's pretty terrible.
It's been 9 hours and 51 minutes off charge and my batter is at 40%. The screen on time is 34 minutes and set to autobright. Anyone else getting anything this bad?

melted_cow said:
I would have asked this in the thread, but I'm new so can't make posts there. Anyways, for me it's pretty terrible.
It's been 9 hours and 51 minutes off charge and my batter is at 40%. The screen on time is 34 minutes and set to autobright. Anyone else getting anything this bad?
Click to expand...
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How long have you been using this ROM for ? It usually takes at LEAST 2-3 days of use before battery stats improve. That goes for every new ROM you install.

The battery in cm10 is great I'm seeing 1% per hour in standby just run a few cycles it will calm
Sent from my HTC One X using xda premium

I've been using p12v2 the day it came out, but I've been using the ROM since p5. Should I just run it through a few full cycles then?

melted_cow said:
I've been using p12v2 the day it came out, but I've been using the ROM since p5. Should I just run it through a few full cycles then?
Click to expand...
Click to collapse
Have a look at cpuspy on the market check that your going into deep sleep what %
Sent from my HTC One X using xda premium

whynot66 said:
Have a look at cpuspy on the market check that your going into deep sleep what %
Sent from my HTC One X using xda premium
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Ah, I forgot I installed that. Deep sleep is at 58%

I recently had quite good battery life on eprj cmx(10). I got about 3.5h screen-on time, and in total a time of 6.5h. Look at my quote below(yip I just did quote myself).
timlambo said:
Here are some battery stats for the concerned.
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I did actually use the phone as you can see. This is just very normal usage. Browsing, xda and flipboard mostly. Also running on the oc version and lowest screen brightness(which is still quite bright).
Sent from my HTC One X using xda premium
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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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Sent from my SGH-T999 using xda app-developers app

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.
Click to expand...
Click to collapse
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

Nexus battery issue

Hi all. I have a gnex that has horrible battery life. I have tried using the stock battery and the OEM extended battery however I will only get about eight hours of use. I am running cm10 with lean kernel. I have overclocked, under clocked, and undervolted but has made no difference. I am including some screenshots so someone can try to help me or at least tell me I'm not alone lol.
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Sent from my Galaxy Nexus using xda app-developers app

How much screen time? Press screen in the battery option.
Sent from my SPH-D710 using xda app-developers app

1. Don't overclock
2. Don't use LTE
3. Keep your screen as dim as possible
4. CM isn't really known as a battery saver rom. Its more of a performance with stability type rom
5. Test out other kernels.
6. Check your apps to make sure you don't have one that's killing your battery
7. GPS should be off
8. Turning sync off will help too
Oh ya and questions go in the Q and A forum
Sent from my Galaxy Nexus

If you're constantly in areas with low signal and data on, your battery will drain from trying to get a signal.
Sent from my Galaxy Nexus using xda premium

Well it seems like you're using the phone pretty hard on LTE with a 1.6ghz overclock... Sounds about right.

martonikaj said:
Well it seems like you're using the phone pretty hard on LTE with a 1.6ghz overclock... Sounds about right.
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Yes, way overclocked. Is your phone actually using that frequency and is it stable. Lean exp. 5 can under clock on the low side to 180. Try that.
Actually your battery life seems quite normal.
Some folks are saying that Diet kernel gives great battery life. I haven't tried it yet. I'm wondering if it will slow my phone down too much. I'm loving the speed and stability of Lean kernel.
Sent from my Galaxy Nexus using Tapatalk 2