Develop Bugs

[Q] Battery Life, Standby Current

Hey all,
I just picked up a G2 and got all excited and dumped Virtuous onto it (I'm very used to Sense).
I soon realized that the battery life of this thing is ridiculously bad. I put CurrentWidget on it (I switched from Android on HD2), and noted that it's draining, on standby, at ~60-80 mA. That's very high; on the Android on HD2, it sometimes is as low as 7-9mA (on average).
I'm not doing anything particularly special, and I've got the same settings on both. It's unlikely it's the reading, as the percentages go down like crazy on the G2 (or get stuck; it often gets stuck at 96% for an hour or two and then goes down very quickly). Quantitatively, it's about 1% per five or ten minutes, while I could get maybe 1% per half hour or 45 minutes on the HD2.
Has anybody done any CurrentWidget tests on their G2? I've searched around, and it seems that not many others are using this test (it's very popular over with the HD2 kids. ). Does anybody have numbers they'd like to share? I'd be very interested in seeing them!
I'll, meanwhile, try the AOSP and stock build again to see how the widget performs on that. I'm very sure this isn't normal, though...
Thanks!

The norm for me is 28-38ma on stand by, you will not be able to get it as low as the HD2. It stays at 100% for about 1 1/2 hours after that it drops and at the 60's slows down again.
Sent from my HTC Vision using XDA App

ddgarcia05 said:
The norm for me is 28-38ma on stand by, you will not be able to get it as low as the HD2. It stays at 100% for about 1 1/2 hours after that it drops and at the 60's slows down again.
Do you have any task killers running? Menu, setting, about phone, battery stats, then youll see what app is eating the battery.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Sent from my HTC Vision using XDA App

I've posted before and was able to get the phone to last 12 hours on 1%. It drained at such a low mA that it said 0 and 1 often. I will try to get it that low if i can again since i changed to RC4.
Will post screenshots and logs of information on apps running then make a guide about what settings need to be where and what files need to be deleted and added.

ddgarcia05 said:
The norm for me is 28-38ma on stand by, you will not be able to get it as low as the HD2. It stays at 100% for about 1 1/2 hours after that it drops and at the 60's slows down again.
Do you have any task killers running? Menu, setting, about phone, battery stats, then youll see what app is eating the battery.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
That's odd, though. I would've expected otherwise, considering that Android on HD2 requires most things to read/write to SD card, which would supposedly be more power-hungry than writing to NAND...
Nope; I've run tests on almost pure stock builds (just Astro + CurrentWidget + SetCPU installed, but I don't even have SetCPU running...). Happens on both Virtuous and Villain (Sense builds). Thanks for your input!
danielefeldt said:
I've posted before and was able to get the phone to last 12 hours on 1%. It drained at such a low mA that it said 0 and 1 often. I will try to get it that low if i can again since i changed to RC4.
Will post screenshots and logs of information on apps running then make a guide about what settings need to be where and what files need to be deleted and added.
Click to expand...
Click to collapse
That's amazing. Please do post additional information when you have time! I'd be happy to spend some time in the coming weeks to replicate your behavior.

for some reason my g2s battery got better as time progressed.
fresh out the box=needed 2 charges a day
3 weeks later= 7am-10pm still at 36% with HEAVY use.

Shouldn't Standby eat more than the HD2 based on it being 4g? Also I use the GSM/CDMA Auto which has increased my battery life significantly. *#*#4636#*#* phone info. My time without signal was around 9% and is down to 0 since changing it. I am a pretty heavy user and I usually go about 24-30 hours on a single charge. (I'm using the chitech 1800 mah battery though.)
Edit: I'm OC'd to 1497 with 245/245 screen off profile.

urfavoritemazn said:
for some reason my g2s battery got better as time progressed.
fresh out the box=needed 2 charges a day
3 weeks later= 7am-10pm still at 36% with HEAVY use.
Click to expand...
Click to collapse
I really want to get that type of battery life! It might have something to do with batterystats.bin being well conditioned. I've tried running to zero and it seems to help a little little bit...
rUsTyRuSs said:
Shouldn't Standby eat more than the HD2 based on it being 4g? Also I use the GSM/CDMA Auto which has increased my battery life significantly. *#*#4636#*#* phone info. My time without signal was around 9% and is down to 0 since changing it. I am a pretty heavy user and I usually go about 24-30 hours on a single charge. (I'm using the chitech 1800 mah battery though.)
Edit: I'm OC'd to 1497 with 245/245 screen off profile.
Click to expand...
Click to collapse
That might be true, although I don't have any 4g around in my area. That said, I think HSPA+ is just another bit onto HSDPA, which is what the HD2 has anyway. I don't think it should consume that much more power... (3x fold!). I've tried switching to GSM/CDMA Auto (PRL), but I was using GSM Auto already. We'll see if it helps too!
Thanks guys for your input and feedback; I hope it'll help others, too.

rUsTyRuSs said:
Shouldn't Standby eat more than the HD2 based on it being 4g?
Click to expand...
Click to collapse
Argh, it's not "4G", that's just some made-up T-Mobile nonsense about HSPA+ (still an uprated 3G technology).

Lol I feel your pain
Sent from my HTC Vision using XDA App

Horrible Battery Life When I'm Not Even Using My Phone??

Well everynight before I go to sleep I charge my phone fully and unplug it before I sleep
Usually I would only lose about 1 % or 2% overnight
But this week I would lose over 60% over night! Its outragous!
I looked at what was killing my battery and "Cell Standby" and "Phone idle" were both over 45 - 49% !!
Anyway I can fix this problem??
Thank You
Sent from my HTC Vision using XDA App

There may be some random issue with your nearby cell tower, causing the signal to be weaker than normal (particularly 3G). This might cause your phone to be constantly looking for the tower, and killing the battery. I've noticed this to happen at my house, although the difference in battery usage is not as severe as what you describe.
If you haven't changed anything on your phone, I would just leave it be for a few days and see if improve on their own.

redpoint73 said:
There may be some random issue with your nearby cell tower, causing the signal to be weaker than normal (particularly 3G). This might cause your phone to be constantly looking for the tower, and killing the battery. I've noticed this to happen at my house, although the difference in battery usage is not as severe as what you describe.
If you haven't changed anything on your phone, I would just leave it be for a few days and see if improve on their own.
Click to expand...
Click to collapse
I Havent changed anything at all
ok but if things dont get better ill have to flash a new radio to fix it

Okay well my phone's battery is still pretty bad so
Does anybody know what Radio is known to save battery?

XxFerociouS said:
Okay well my phone's battery is still pretty bad so
Does anybody know what Radio is known to save battery?
Click to expand...
Click to collapse
As redpoint73 said .its probably because of weak 3g signals ,set your phone to "2g only"
overnight and see if it make any different. i dont think different radio will help ,different kernel might do .

bahmanxda said:
As redpoint73 said .its probably because of weak 3g signals ,set your phone to "2g only"
overnight and see if it make any different. i dont think different radio will help ,different kernel might do .
Click to expand...
Click to collapse
My phone has always been on 2G and it still kills my battery pretty quick
I have everything turned off at night and still battery dies very quick
Sent from my HTC Vision using XDA App

Your not alone ferocious. I have the same issue its driving me nuts. Mine's skyrockets to damn near 50 percent. I'm living in california. But running sense seems to fix it for some reason.

Shaquiel Harris said:
Your not alone ferocious. I have the same issue its driving me nuts. Mine's skyrockets to damn near 50 percent. I'm living in california. But running sense seems to fix it for some reason.
Click to expand...
Click to collapse
Yeah its really killing my battery overnight!
Im Also in California
as of right now here is what is killing my battery
Cell Standby- 47%
Phone Idle- 44%
Voice Calls- 8%
Display 3%
Im Running GingerVillain 1.5 with Stock Radio
Its overclocked to 1.2ghz and has profiles with SetCPU
Wifi Only on When im using the phone
gps is off
Screen brightness is very low
only using 2G
this is very frustrating

Turn off data completely and see if it still drains. If that stops the drain, change your radio.
Remember you must be radio s-off to do that. Root with gfree (you'll need the cm 6.1.0 kernel or stock).

XxFerociouS said:
Okay well my phone's battery is still pretty bad so
Does anybody know what Radio is known to save battery?
Click to expand...
Click to collapse
There's no good answer to that. What radio is the "best" varies by geographic location. The best way to find out is by trial and error, although the newest radio tends to be the best place to start. Some people seem to be having some decent luck with the latest AUS radio. But like I said, its all just trial and error. I remember on my last phone (Touch Pro 2) people sometimes reported better battery life and reception by flashing older radios.
EDIT: I just noticed this thread: http://forum.xda-developers.com/showthread.php?t=990860
Some people claim EXCESSIVE battery drain using the newest AUS radio, while others do not. So it still goes back to my statement that trial and error is your best bet.

funkeee said:
Turn off data completely and see if it still drains. If that stops the drain, change your radio.
Remember you must be radio s-off to do that. Root with gfree (you'll need the cm 6.1.0 kernel or stock).
Click to expand...
Click to collapse
Okay I just turned off all my data and I will report back with the results
I'm already rooted
Sent from my HTC Vision using XDA App

XxFerociouS said:
Yeah its really killing my battery overnight!
Im Also in California
as of right now here is what is killing my battery
Cell Standby- 47%
Phone Idle- 44%
Voice Calls- 8%
Display 3%
Im Running GingerVillain 1.5 with Stock Radio
Its overclocked to 1.2ghz and has profiles with SetCPU
Wifi Only on When im using the phone
gps is off
Screen brightness is very low
only using 2G
this is very frustrating
Click to expand...
Click to collapse
Im running on GingerVillain 1.5 with stock radio as well
I don't use the profiles on setcpu, they're confusing and annoying. I don't even keep it overclocked much, only when I use my phone alot. When my phone is idle I set it back down to 806, sometimes even 700.
Wifi is on all the time when I am at home
GPS = on for me (at home)
screen brightness is like 40%
I keep 4g on all the time as well
At night, I keep my phone unplugged at 100% than the next day its at 99%
Ill use it for maybe 20 minutes and its at 90%. After about an hour and a half it goes to like 75% than ill put it back on standby for maybe an hour than its at like 73%
To sum it up, if its in standby, its fine
If im using it from 100% to 0% it lasts a good 3-5 hours depending on if im streaming vids, listening to music, and browsing the internet.
Im testing the waters with different settings and roms as of now..
GingerVillain is my favorite so far.

melodicjunkie said:
Im running on GingerVillain 1.5 with stock radio as well
I don't use the profiles on setcpu, they're confusing and annoying. I don't even keep it overclocked much, only when I use my phone alot. When my phone is idle I set it back down to 806, sometimes even 700.
Wifi is on all the time when I am at home
GPS = on for me (at home)
screen brightness is like 40%
I keep 4g on all the time as well
At night, I keep my phone unplugged at 100% than the next day its at 99%
Ill use it for maybe 20 minutes and its at 90%. After about an hour and a half it goes to like 75% than ill put it back on standby for maybe an hour than its at like 73%
To sum it up, if its in standby, its fine
If im using it from 100% to 0% it lasts a good 3-5 hours depending on if im streaming vids, listening to music, and browsing the internet.
Im testing the waters with different settings and roms as of now..
GingerVillain is my favorite so far.
Click to expand...
Click to collapse
Yeah gingervillain is also my favorite rom
I have no idea why when my phone is on standby the battery dies pretty quick
It has pretty good life when I use it but when I don't the battery seems to die pretty quick
And my phone tells me that cell standby is always using aroun 40% of my battery and I just can't find a way to lower it
Sent from my HTC Vision using XDA App

funkeee said:
Turn off data completely and see if it still drains. If that stops the drain, change your radio.
Remember you must be radio s-off to do that. Root with gfree (you'll need the cm 6.1.0 kernel or stock).
Click to expand...
Click to collapse
Okay I turned off all data but it didn't seem to do anything at all to my phone
Sent from my HTC Vision using XDA App

[Q] High battery drain because of Android-System

Hello,
I have a high battery drain because of "Android System". I lose about 3-5% per hour of my battery in idle state. I turn screen off and didn't use it.
I'm using Slim ICS ROM with franco kernel #174.
Badass Battery shows me that following included processes are in Android-System:
Code:
com.android.systemui
system
android:ui
com.tmobile.themechooser
surfaceflinger
com.android.settings
servicemanager
So anybody know what's the problem here?
I'm already disabled Google Photo Sync, NFC and GPS because I didn't need that. Also googling for the problem doesn't help.
Hope you can help, thanks!

You hit the "Yes this is a question" box
Guess where this thread belongs?
Thread Moved
Friendly neighborhood Moderator

you must install your rom again
this is based on your luck

luckydude said:
you must install your rom again
this is based on your luck
Click to expand...
Click to collapse
Again, I've mentioned this twice today: Bullsh**, I don't mean to be disshonouring, or anything, but please, give proper answers,. It's all good, that you want to help, but only with proper and correct answers.
Right, back to topic;
Go into your dev. settings, and uncheck everything that doesn't need to be checked (Stay Awake, Strict mode, etc.) Undervolt the CPU, that should save a ton of battery charge, and underclock to 900-920 MHz, that is definitly enough, on a dual-core

Thanks for your answer =)
I think my phone is already undervolted through Smartreflex in francos app and I also tried underclocking by setting max cpu to 1036 Mhz (instead of 1200 Mhz).
The problem disappeared after 1-2 charges (don't ask me why..).
And now after flashing Slim ICS 3.9, battery time seems to be ok (for me at least).
Per hour in idle state the phone consumes ca. 2-3%.
I ask myself how do others get 1% drain over night. Is that even possible? Tried very much kernels (franco, trinity, glados and leankernel) and didn't even get near that.
Any tips?

OP Im glad you mentioned the issues went away after a few charges. this has been an issue for some who do not believe that a few charge cycles does anything. well im with you as i always see things sort of "settle down" after a few days of flashing a new rom.

I have the same problem on my Nexus S.
The process consuming battery is surfaceflinger. I can see it on battery screen before the name change to Android System.

Pik3no said:
I have the same problem on my Nexus S.
The process consuming battery is surfaceflinger. I can see it on battery screen before the name change to Android System.
Click to expand...
Click to collapse
I doubt you will find much help here for the Nexus S.

adrynalyne said:
I doubt you will find much help here for the Nexus S.
Click to expand...
Click to collapse
I guess this is an Android problem. Not related to any device.

Android
Yes, i think your prob comes to every Android phone after flashing New rom.
Just wipe Battery stets after flashing. It needs few complete chargings to calibrate the battery.
There are also many apps in the market for this

konsolen said:
Yes, i think your prob comes to every Android phone after flashing New rom.
Just wipe Battery stets after flashing. It needs few complete chargings to calibrate the battery.
There are also many apps in the market for this
Click to expand...
Click to collapse
You need to read this. Also you, OP.

General Crespin said:
You need to read this. Also you, OP.
Click to expand...
Click to collapse
This. People, just give it 2,3 days for the rom to settle after flash. Same for a kernel.

konsolen said:
Yes, i think your prob comes to every Android phone after flashing New rom.
Just wipe Battery stets after flashing. It needs few complete chargings to calibrate the battery.
There are also many apps in the market for this
Click to expand...
Click to collapse
I don't know if was the new kernel I flashed or was the battery stats wipe I did, but seems now my phone have no more RILD/RILJ wakeclocks.

GNexor said:
I ask myself how do others get 1% drain over night. Is that even possible? Tried very much kernels (franco, trinity, glados and leankernel) and didn't even get near that.
Any tips?
Click to expand...
Click to collapse
Yes, it is possible. I get 1 or 2% drain overnight with wifi and mobile data disabled, and up to 5 to 6% if mobile data is enabled overnight.
My record with it is 1 day and 20 hours from 100% to 3%.
I had a LG Optimus Black before and didn't last a day. I'm loving this Galaxy Nexus.
Nuno

One Power Guard can help the system into a deep sleep,Reduce battery drain
downloaded from http://forum.xda-developers.com/showthread.php?t=1889740

Nuno_PT said:
Yes, it is possible. I get 1 or 2% drain overnight with wifi and mobile data disabled, and up to 5 to 6% if mobile data is enabled overnight.
My record with it is 1 day and 20 hours from 100% to 3%.
I had a LG Optimus Black before and didn't last a day. I'm loving this Galaxy Nexus.
Nuno
Click to expand...
Click to collapse
I would like to achieve battery drain like that, seems like what it should be.
I am running AOKP Build 2 and I feel like my battery life is ok but not great. I let my phone sit overnight last night with sync off, but LTE on and it drained roughly 4% an hour. I actually turned off LTE in the middle of the night to see if there would be a difference, and no, it drained at the same speed on 3G as well. I live in an area with pretty good reception actually, GSam says I spend the vast majority of my time with a signal strength of 4/5.
GSam reported that roughly 34% of my battery drain overnight was due to Phone Radio. Another 52% was due to app usage. Drilling into that it tells me that over 40% of the battery drain from apps came from "Android System", "Phone" and "Kernel". Under Android System, which was by far the greatest drain of the apps, it only kept the phone awake 1m18s overnight so that doesn't seem excessive. However, I'm confused as to why, with a good signal/connection my battery would drain at nearly 4% an hour whether connected to LTE or CDMA. Unless the radios in this device are poor, I have a hard time believing there isn't a way to fix this without using something like Juice Defender.
I can't recall because it's been so long, but I don't really remember any ICS ROMs draining this fast. I'm on a clean install of AOKP B2 and I've tried a few different kernels with the same results. Any ideas anyone?

So I wanted to let you all know that after trying a few different ROM/Kernel combinations all with similar idle battery drain, I installed the latest (9/21) CM10 nightly and I only lost about 10-12% overnight last night connected to LTE. That is a much better drain than the 30% or so I was seeing previously. Not sure why but my phone just hasn't been handling the latest AOKP builds very well. I am afraid to try a different kernel right now as I'm leaving town tomorrow for most of the week so I'll leave it as is until I get home next weekend, and see if I get this good of battery life with the latest Leankernel.

Surfaceflinger
The same happens to me, this app appear in BetterBattery stats, Surfaceflinger appear as the culprit of my 45%+ battery consumption caused by Android Sys
When I first rooted my phone (xperia S) I noticed an 31%+ energy consumption by Android Sys, I reflashed and re-rooted and stoped for 2 weeks or so, now 2 days ago I woke up to find that 81% of the battery is being drained by Android Sys, then it lowered to 31-43%. I noticed that when I refreshed the stock "Battery" app ,"Surfaceflinger appear for a moment, I seem that I confirmed with the BetterBatteryStats, Surfacaflinger appears at the top.
Why is this happening? Can something be done about it?
PS: I cannot change kernel, bootloader is locked...

Surfaceflinger and android.process.acore are top battery drainer. I mean how to make them not sucking on battery?

[Q] Help! Flashed Jelly Bean, down to ~6hrs Standby Battery Life

I flashed Jellybean for my gnex this last weekend, and I've noticed a severely precipitous drop in battery life (15% in 90 min, 15 min screen on). I found this yesterday when my phone went completely dead after just 6 hours on idle, despite running some pretty severe power-saving options. I can literally see the battery draining as I took the screenshots to post.
Running 4.1.1 stock, Franco Kernel Version 5 (power save powermode), 2100 mAh battery - I tried to provide as much information as I can in the screenshots. The weird thing is that none of the information stands out as an obvious power-drain, its just falling for what I believe to be no good reason.
Please help!

First of all: congrats if providing such detailed information about your battery information! (I'm being serious, not sarcastic)
Secondly, have you tried running it with WiFi only to see if there's a difference? Also, you need to go through about 2-3 charge cycles before you have a good idea of our battery range.
Also, what kernel are you using?
Sent from my Galaxy Nexus using Tapatalk 2

I have same problem, 1750 stock battery only lasts about 3 hours....
AOKP JB B 1 and franco
Sent from my Galaxy Nexus using xda premium

Kernel
I'm hoping its just running it a few charge cycles fixes the problem, because my battery meter is like a countdown clock right now.
I'm running 3.0.41-franco.Kernel-Milestone5.
geoffcorey said:
First of all: congrats if providing such detailed information about your battery information! (I'm being serious, not sarcastic)
Secondly, have you tried running it with WiFi only to see if there's a difference? Also, you need to go through about 2-3 charge cycles before you have a good idea of our battery range.
Also, what kernel are you using?
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse

I reccommend getting cpu sleeper. Its brillant and saves me tons of battery
https://play.google.com/store/apps/details?id=com.eugene373.cpu.sleep&feature=nav_result#?t=W251bGwsMSwxLDMsImNvbS5ldWdlbmUzNzMuY3B1LnNsZWVwIl0.

CPU Sleep
Thanks! However, I'm already running on only one core, from a setting in Franco's app.
My problem is that there doesn't seem to be anything glaring that is draining my battery. Awake time is slightly more than I'd like, but not nearly enough to drain the battery at 10% an hour with the screen off.
And for the above poster, I have not tried running it with wifi only and no mobile data - wifi at my office is spotty, and I'd like the conditions I am testing it at to try to mirror how I would normally use my phone.
ac3theone said:
I reccommend getting cpu sleeper. Its brillant and saves me tons of battery
Click to expand...
Click to collapse

bmurray said:
Thanks! However, I'm already running on only one core, from a setting in Franco's app.
My problem is that there doesn't seem to be anything glaring that is draining my battery. Awake time is slightly more than I'd like, but not nearly enough to drain the battery at 10% an hour with the screen off.
And for the above poster, I have not tried running it with wifi only and no mobile data - wifi at my office is spotty, and I'd like the conditions I am testing it at to try to mirror how I would normally use my phone.
Click to expand...
Click to collapse
hmmm... did u try replacing the battery?

Battery
No - the battery worked just fine on ICS as of last Friday (28 hours standby charge). I would hope that flashing ROMs/Kernels would not actually damage it.
Thanks for trying to help - I'm really confused since all the ratios look comparable to people who get great battery life, but for some reason, just seem to suck about 5x more battery for me, so its impossible to pinpoint one specific culprit. I thought it was a mis-calibration, but apparently that is just a myth.
ac3theone said:
hmmm... did u try replacing the battery?
Click to expand...
Click to collapse

Let me start by saying that I am not an expert, but the following tips helped me. I agree with the WiFi and the detail you provided was great. I see that you are running 4G, this will eat up the battery. Your ROM may have a toggle for the 4G (LTE) and 3G (CDMA). If you have WiFi available I would use that. You may want to turn off the NFC (system setting>Wireless & Networks More....) unless you use google wallet or share screen alot. Also, I had horrible results with the Facebook app running in the background, which I have taken off my phone. I set a bookmark in dolphin browser instead of using the app.
If you are not seeing any improvements with in the next few battery cycles you may try wiping the battery stats in Recovery. The first ROM I flashed from stock my battery life was all over the map and wiping battery stats helped. I ran the same Franco Kernel and was getting 2.5 -3 hrs of screen time. Hope this helps.

also, get CpuSpy from the market, and see which speeds your cpu is using (or not using).

Not that this will help software issues but Sprint is giving away a free 2100Mah extended battery with the door. You just have to pay for the shipping. No scam at all, I think they know that they have a glitchy piece of product and need to help calm us down. Just call telesales and tell them you own a Gnex.

CPU Speeds
Almost exclusively at 384 or 729 mHz, capped at 1026.
geoffcorey said:
also, get CpuSpy from the market, and see which speeds your cpu is using (or not using).
Click to expand...
Click to collapse

So that means that the CPU isn't going into deep sleep, which is an issue.
All I can suggest is reflash with a full wipe, and reinstall the apps you can, and slowly weed out any rogue apps that could be causing said issue.
Sent from my Galaxy Nexus using Tapatalk 2

Deep Sleep
Sorry, I meant that when awake, the vast majority of the clock speeds are 384 and 729. I am in deep sleep approximately 75% of the time.
If no solution comes up in this thread, I will try re-flashing to stock JB/stock JB kernel tomorrow night to see if it just needed a few recharge cycles to stabilize, and if not, if wiping/reinstalling helps.
geoffcorey said:
So that means that the CPU isn't going into deep sleep, which is an issue.
All I can suggest is reflash with a full wipe, and reinstall the apps you can, and slowly weed out any rogue apps that could be causing said issue.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse

I'm getting the complete opposite of u op
Sent from my Galaxy Nexus using xda premium

Yeah, that seems to be the general experience here. My phone is down to ~28% since the OP. Again, the proportions in which things are draining power are correct, they are just doing it too quickly (1% per minute of screen time).
I'm going to completely wipe and re-flash JB tonight, keeping the stock kernel this time, unless someone can help me out.
Alton (Halo 2) said:
I'm getting the complete opposite of u op
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse

bmurray said:
Yeah, that seems to be the general experience here. My phone is down to ~28% since the OP. Again, the proportions in which things are draining power are correct, they are just doing it too quickly (1% per minute of screen time).
I'm going to completely wipe and re-flash JB tonight, keeping the stock kernel this time, unless someone can help me out.
Click to expand...
Click to collapse
Did u flash francos kernel yet ?
Sent from my Galaxy Nexus using xda premium

Yes - every process/screen is drawing the typical percentage of power use (~50% screen, 8% Phone Idle, 8% cell standby), but the battery is draining 4x faster than it should. Francos app shows me running at completely standard voltage, and I'm on the powersave mode. I think it must be a battery indicator/stats issue, otherwise the proportions would be all off.
Alton (Halo 2) said:
Did u flash francos kernel yet ?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse

bmurray said:
Yes - every process/screen is drawing the typical percentage of power use (~50% screen, 8% Phone Idle, 8% cell standby), but the battery is draining 4x faster than it should. Francos app shows me running at completely standard voltage, and I'm on the powersave mode. I think it must be a battery indicator/stats issue, otherwise the proportions would be all off.
Click to expand...
Click to collapse
Try wiping ur battery stats in cwm
Sent from my Galaxy Nexus using xda premium

I know that is supposedly a placebo, but in this case, something is clearly wrong. I'll give it a try.
Alton (Halo 2) said:
Try wiping ur battery stats in cwm
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse

awesome battery life

I don't use my phone to stream movies and play games like many people, but still it's awesome standby time (this is a year old battery). :laugh:

meh....
hardly using your phone =/= amazing battery..

Omg! That's terrible! Your battery needs to be taken to the back porch and shot!
Sent from my Galaxy Nexus using Xparent Skyblue Tapatalk 2

Nice!
Nice!

Oh man... turn off a few things (gps etc.), flash the latest AK kernel, and see what that does for you. I usually get around 2.5-3 hours on screen time.

ChristianDude20 said:
Oh man... turn off a few things (gps etc.), flash the latest AK kernel, and see what that does for you. I usually get around 2.5-3 hours on screen time.
Click to expand...
Click to collapse
I'm too able to get 2.5-3 hours of screen time, but it won't last me 5 days

ChristianDude20 said:
Oh man... turn off a few things (gps etc.), flash the latest AK kernel, and see what that does for you. I usually get around 2.5-3 hours on screen time.
Click to expand...
Click to collapse
On Verizon Galaxy Nexus this is completely unrealistic for me...
I'm ecstatic with 2 hrs screen on time.
Edit: Using AK Kernel, and love it. But still...

leffer said:
On Verizon Galaxy Nexus this is completely unrealistic for me...
I'm ecstatic with 2 hrs screen on time.
Edit: Using AK Kernel, and love it. But still...
Click to expand...
Click to collapse
Sorry to hear that
Of course I'm on wifi all day and I undervolt a little, so our different settings probably account for that. Try playing around with your settings, you might just be surprised :good:

ChristianDude20 said:
Sorry to hear that
Of course I'm on wifi all day and I undervolt a little, so our different settings probably account for that. Try playing around with your settings, you might just be surprised :good:
Click to expand...
Click to collapse
Since I still have unlimited data with Verizon, I never bother with WiFi.
But it's also really because wifi usually annoys me, I feel like when I've used it it's never reliable (and my work wifi is slow and has filters). Like wifi will go to sleep and I won't recieve a google talk message until 15 minutes after the fact... So I just use 4g.
I should try practicing using WiFi to see how much of a difference it will make.

leffer said:
Since I still have unlimited data with Verizon, I never bother with WiFi.
But it's also really because wifi usually annoys me, I feel like when I've used it it's never reliable (and my work wifi is slow and has filters). Like wifi will go to sleep and I won't recieve a google talk message until 15 minutes after the fact... So I just use 4g.
I should try practicing using WiFi to see how much of a difference it will make.
Click to expand...
Click to collapse
ah yeah that would be the culprit. 4g absolutely annihilates my battery too. That sucks about your work wifi, but if you want better battery life, that's the solution.
Actually now that I think about it, 2 hours on screen time with 4g on all day is pretty dang good!

I don't understand sense of open new thread for this purpose...
each galaxy nexus has different CPU, Battery and usage,
if you are 60 years old that using phone only with clock purpose it's simple achieve this time
the most important factor about battery is data, wifi and 3G data trasmission destroy our battery , the other one is screen, 0% brightness != 100% brightness != auto brightness.
the thirth thing is kernel optimization of governor, using aggressive governor don't help with smoothness and cause your battery die fast, optimized governor is the one that don't switch to max freq unless is required, intellidemand do this better than others
Anyway each device is different, i done time ago an investigation about this, Smartreflex of our phone is different , my friend had GN too
Code:
FREQ(Mhz) MINE(mV) FRIEND(mV)
300 840 820
700 1080 1025
1200 1260 1220