Develop Bugs

Battery drain on clean Rom installs.

The last few nights, I have tried a few different JB Roms. All with the same results. My GNex has a full charge before I go to bed, I wake to my phone telling me to charge it 8 hours later. With NO wifi or network data on. This can't be normal.
The roms:
ASCENT 3.0
Jelly Belly 4.0
New Unofficial Cyanogen Release.
No extra apps installed. Purely stock.
Tonight, I'll try it in airplane mode, and see if my network coverage is what's draining the battery. But for the most part I'm never without a signal.
Any ideas or ways I can see if the battery is just bad?
Also, what would the current Verizon radios be? I believe mine are up to date, but I guess that could be an issue if it is indeed my network signal being dropped.

Im on the 07/27 fitsugly cm10 rom with r225 franco kernel and for some reason my battery life has gone through the roof, after 30 hours of being on the battery is still at 56%. Granted im not using it much now but still i've never seen this type of battery life before. Overnight the battery dropped maybe 4% at best, wifi is always on and its fetching emails.

How odd have you tried charging up and resetting the battery stats ? May help
Sent from my Galaxy Nexus using xda premium

peachpuff said:
Im on the 07/27 fitsugly cm10 rom with r225 franco kernel and for some reason my battery life has gone through the roof, after 30 hours of being on the battery is still at 56%. Granted im not using it much now but still i've never seen this type of battery life before. Overnight the battery dropped maybe 4% at best, wifi is always on and its fetching emails.
Click to expand...
Click to collapse
Do you have a link to the rom?

Newer versions of each are out, i just didn't bother of updating it since it worked so well.
Rom http://fitsnugly.euroskank.com/?rom=cm10&device=maguro
Kernel http://minooch.com/franciscofranco/Galaxy Nexus/JB/Jelly Bean/franco.Kernel-r225-384GPU.zip

peachpuff said:
Newer versions of each are out, i just didn't bother of updating it since it worked so well.
Rom http://fitsnugly.euroskank.com/?rom=cm10&device=maguro
Kernel http://minooch.com/franciscofranco/Galaxy Nexus/JB/Jelly Bean/franco.Kernel-r225-384GPU.zip
Click to expand...
Click to collapse
I installed the newest version of the ROM. I was curios what the different GPU kernels were for. Is there one that Toro should use rather than the other? I think I installed the 512 version. Should I not have?

Minooch + franco.Kernel #223 (see attached files). I haven't used my phone much in past 24 hours, but battery life is awesome. I use latest bootloader and radio firmware, CPU is set on interactive governor, 1420-384MHz, max screen off CPU frequancy - 729MHz, 512MHz on GPU.

I think I tried that ROM before, not sure if its just for maguro. I have a Verizon toro.
Sent from my Galaxy Nexus using Tapatalk 2

I've yet yo find a from that can beat stock.... Idk
Sent from my Galaxy Nexus using xda app-developers app

Bkral93 said:
I installed the newest version of the ROM. I was curios what the different GPU kernels were for. Is there one that Toro should use rather than the other? I think I installed the 512 version. Should I not have?
Click to expand...
Click to collapse
If you don't need the higher clocked gpu speeds then just stick with the 384mhz kernel.
MS. said:
Minooch + franco.Kernel #223 (see attached files). I haven't used my phone much in past 24 hours, but battery life is awesome. I use latest bootloader and radio firmware, CPU is set on interactive governor, 1420-384MHz, max screen off CPU frequancy - 729MHz, 512MHz on GPU.
Click to expand...
Click to collapse
Pretty much identical battery life im getting right now, battery monitor is saying im sipping 8mA of battery when idling.

Yeah, No MiNCO toro release. :|
Went with the ROM and latest Kernel, and I can't believe the battery life. Tonight will be the real test though.

Bkral93 said:
The last few nights, I have tried a few different JB Roms. All with the same results. My GNex has a full charge before I go to bed, I wake to my phone telling me to charge it 8 hours later. With NO wifi or network data on. This can't be normal.
The roms:
ASCENT 3.0
Jelly Belly 4.0
New Unofficial Cyanogen Release.
No extra apps installed. Purely stock.
Tonight, I'll try it in airplane mode, and see if my network coverage is what's draining the battery. But for the most part I'm never without a signal.
Any ideas or ways I can see if the battery is just bad?
Also, what would the current Verizon radios be? I believe mine are up to date, but I guess that could be an issue if it is indeed my network signal being dropped.
Click to expand...
Click to collapse
Try better battery stats... I am on gsm nexus.
I tried jelly belly, minco , paranoid android, and xenonHD plus bigxies stock. I've used Francisco Francos kernel on bigxies and that gave good battery life but the others all burned cpu and battery, specifically via Android.mediascanningservice. and maps.
Right now I am back to stock 4.1.1 rooted courtesy of rom toolkit and with better battery stats and cpu spy I have a cool phone.
One thing you should be aware of is if you have a lot of media on your phone the scanning service can take a long time to run and calm down. I I upgraded my bosses razr to ICS and his phone took all night to update I guess he has lots of music on it...
To increase battery life you can install titanium backup and freeze maps, and wallet when I not in use. You can install rescan media from the app store and trunk off media scanning service. Or just buy a bigger battery.
This is not a knock on the custom roms. The rom teams mentioned above they are all awesome and are the reason us crackflashers have so much fun. I have learned lots from this experience and have a better grasp on how my phone works due to the efforts of these devs. For now I am sticking with stock... I'm sure I'll be flashing again soon.

You can never judge a ROM on battery life within a day. Every ROM I flash gets bad battery on the first cycle and most the time even the second cycle. You really have to stick with a ROM/kernel combination for at least a few days to be able to judge battery life. It may just be a placebo effect but I use a battery calibration app each time I flash

peachpuff said:
Im on the 07/27 fitsugly cm10 rom with r225 franco kernel and for some reason my battery life has gone through the roof, after 30 hours of being on the battery is still at 56%. Granted im not using it much now but still i've never seen this type of battery life before. Overnight the battery dropped maybe 4% at best, wifi is always on and its fetching emails.
Click to expand...
Click to collapse
Do you have any sync Apps or Account that's awesome battery life
Sent from my Galaxy Nexus using xda app-developers app

jauhari said:
Do you have any sync Apps or Account that's awesome battery life
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
I have three email accounts fetching emails every 10 min with the email app, other than that nothing else. Im down to 30% now after two full days, its finally getting some use.
Sent from my Galaxy Nexus

onsidekick said:
How odd have you tried charging up and resetting the battery stats ? May help
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Resetting battery stats accomplishes nothing related to battery life or reported percentage. It's been debunked some time back by Google.

[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
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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

My battery life

A few days ago I decided to try out ktoon's kernel. I was getting horrible battery life and there is a distinct possibility I did not give it enough time to settle as some have said. One person suggested I get Better Battery Stats, but at the paid app part, I didn't bother and went back to stock kernel.
Since then I have found the thread here and installed it to see what was going on. Fully charged battery unplugged and left idle.. When I woke up I had 8 hours of time on the battery and 92% left.. I was happy with this... A quick game of Angry Birds Star Wars later, and I am down to 88%... Now it has been an hour and a few random things later (Angry Birds Seasons, uninstalling bloat via titanium backup) and I am down to 78%.. 10% gone in an hour?
I am just a bit on the very confused side. I was getting 18 hours or so of decently heavy use prior to flashing a custom kernel. Now, I could just be checking my phone more and not noticing it and causing some bias here, but I am at a loss. One member seems to think I have a hardware problem causing my battery drain and that I should replace my device, but I figure it doesn't hurt to seek a second opinion.
As for the ROM I am on, it is just the stock LJ7 with a few theme tweaks I have done and removed some bloat.
Perhaps I am just looking too deep assuming something is wrong..
EDIT: I just followed a tip by Naddict to stop Google Maps from reporting anything.. Hopefully that helps a bit..

Same I think I get good battery life randomly like for instance any ROM or kernel I try I get random battery life sometimes 10+ hours sometimes 7 or less and I do my best at optimizing my phone to save battery I switch brightness to zero no sync at all juice defender ultimate was also tried lol
Sent from my SPH-L710 using xda app-developers app

Could you post kernel alarms. I mentioned the potential for SD issues basically it works this way. You have cached information that doesn't get wiped the program accesses it and basically because for instance the ktoonsez kernel contains newer linaro or the fact it's based on 4.12 those small difference make the cache potentially poisonous.... another example is corruption of the partition causing media scanner to basically endless loop another example network spoofer if it crashes while running corrupts dalvik and requires a wipe. Or your SD card it's failing. Just examples
Sent from my SPH-L710 using Tapatalk 2

Forgot to mention, when I wrote the OP, I had already switched back to stock kernel. Phone is plugged in charging atm, I'll have that screen shot for you in the morning if you still need it.

I can't complain with these results here... Since I did a few things when I got up, I lost 1%. But over night I only lost 7%

What am I doing wrong. 4 hours after a full charge and I'm at 28%. I used the phone for a total of an hour today between Facebook, YouTube and Internet browsing. Almost dead, WTF!! Please someone help me fix this. I have each frequency undervolted 115 MHz and its pretty stable. I also keep mobile data always off when not using it. So why is my battery life so horrible.
In using freegs3 jellybean.
Sent from my SPH-L710 using xda premium

I've read a lot of people on here complain about the facebook app just sucking the battery away.. Some choose to use the mobile site to connect.. Try uninstalling facebook and seeing how it goes.
tomtom96135 said:
What am I doing wrong. 4 hours after a full charge and I'm at 28%. I used the phone for a total of an hour today between Facebook, YouTube and Internet browsing. Almost dead, WTF!! Please someone help me fix this. I have each frequency undervolted 115 MHz and its pretty stable. I also keep mobile data always off when not using it. So why is my battery life so horrible.
In using freegs3 jellybean.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse

My battery life using aokp Rom by task and ktoonsez and ktoonsez kernel. With Google maps location not reporting. Data and sync turned on. Just figured I'd share.
Sent from my SPH-L710 using xda app-developers app

battery issue
I am having the same issue..this is my first time rooting..and before i rooted I never ran out of battery..but since i rooted i see my battery just droping my the minute as I use my phone..I dont understand what is going on..I tried freezing tons of apps and I have not used face book..any one please help

Do you have better battery stats? It will show if anything is running when screen is off then you can at least narrow it down. What Rom are you on?
Sent from my SPH-L710 using xda app-developers app

4.1.2 battery life terrible

I can't possibly be the first one to create a thread about this. Yet I have been searching and can't find it. So here I go.
I obviously have a T-mobile GS3 T-999. I was on stock unrooted 4.1.1 just fine with great battery life. I updated to 4.1.2 stock unrooted and now my battery life is terrible. I can't even come close to lasting all day like I could before. My habits haven't changed. I haven't installed anything else since they update. I have rebooted and power cycled several times, no change.
Anyone else have a reduction in battery life since upgrading to 4.1.2? Is there anything I can do without going beyond the usual? I have been using power save mode since I bought the phone. So it was that way before and after the update.

Rooting and flashing a custom Rom will increase battery life tremendously. If you don't want to root then disable all the bloat ware. This will speed up phone and increase battery.
Sent from my SGH-T999 using xda app-developers app

Haven't been able to get awesome battery life on my end either. Played with all kernels available even going backwards to kernels I know gave good life on 4.1.1... Something internal is causing it, it seems. I don't get wake locks that I don't cause my self, just battery drops faster now compared to what it did before.
Sent from my SGH-T999 using xda premium

I suspect that the premium suite, which added multi window and a bunch of new apps and features, is probably causing the increased battery usage. With the increasing amount of bloat Samsung is stuffing into their ROMs, decreased battery life is expected.

The life on 4.1.2 is terrible over all not sure why best bet would be routing flashing a custom rom or you could try playing with kernels but those are tricky business. I feel 4.1.1 Roms get the best battery though I'm on 4.2 and not very good battery life on that either
Sent from my SGH-T999 using xda app-developers app

I flashed a number of 4.1.2 roms and found out that for some reason the cpu stays at the max clock constantly. No clue why.. Maybe that's the issue?
Doesn't matter to me at the end since I got a lemon

Yeah I'm not really liking it much. I would do better on 4.1.1
These are my results on Stockorama v2. Stock Kernel.
I don't think it's that bad but I wish it was better.
Sent from my SGH-T999 using xda app-developers app

IXChicharitoXI said:
Yeah I'm not really liking it much. I would do better on 4.1.1
These are my results on Stockorama v2. Stock Kernel.
I don't think it's that bad but I wish it was better.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
That's actually quite good compared to what I get with the latest CM 10.1 nightly.
Sent from my SGH-T999 using Tapatalk 2

klin1344 said:
That's actually quite good compared to what I get with the latest CM 10.1 nightly.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
That's terrible on both accounts lol. I usually get 18 hours with that battery time. I remove all the bloat I mean all of it. I have maybe 20 apps total in my app drawer, I disable all the sync besides contacts, gmail, and calender. But still have drain. On stock kernel it was bad and deep sleep was hardly achieved with no apps running in the back ground. I'm gonna Odin root66 md5, tomorrow and see if it helps. Other then that I'm going back to 4.1.1. I'll report back tomorrow or Friday with results.
Sent from my SGH-T999 using xda premium

Well, I don't plan on rooting or using a custom rom any time soon. But I am hoping to find out what I can tweak to get my battery life back to what it was. I am guessing I don't have the option to go back to 4.1.2 using Kies. And I hear that 4.2 has poor battery life as well, so now I don't have that to look forward too either.

I'm on Stockorama V1 and still had 50% battery when I went to bed this morning (I work nights). The first day after I flashed it the battery was pretty bad, mostly due to wake locks from the Media Server, but that was an easy fix with an app from the Market. I would actually say my battery life is a little bit better now than it was on 4.1.1.
Sent from my SGH-T999 using xda premium

I don't know if Sammy ever solved it, but iwith past updates the media scanner would hang up and drain batteries quick. Some had their phones heat up.
Another culprit can be that when going to a different android version, it may handle some data differently, causing hang ups when it runs into something they didn't plan for.
In either of these cases, its best to do a full wipe (backup first) and then reinstall your apps. Don't restore them from backup as that's just like not wiping in the first place.
Then wherever possible, import your data through the app itself. Not many do this but some do. Contacts is one.
I know it can be a pain, but it can help a lot. Plus you wind up cleaning out stuff you don't use or need anymore.
I always wipe data when updating , unless its to the same android version (4.1.1 to 4.1.1). Going to 4.1.2 shouldn't be to big a deal, but you never know.
Another thing to try:
If you verify media server/scanner is a oroblem, copy all your music, pics, vids, etc to your computer and wioe it from the phone. Then reboot and wait a few min to see if its acting ok. Then copy your files back, wait a few min and reboot again. Hopefully it'll calm down after this.
Hope that's more helpful than confusing!
Sent from my SGH-T999 using xda premium

You wonder why carriers take so long to release an update because usually people would start complaining. It's not 4.1 so don't expect the same thing, usually when there's an update things are the never the same. It was the same thing the jump from ics to jelly bean, when creating voltages for batteries I don't think companies anticipate all the extra stuff a update can bring this is still kinda of an ics phone.
Sent from my SGH-T999 using xda app-developers app

My battery life went up so much. I'm on stock but rooted. I usually drain my battery before the day is over. Now I'm going over a full day.
Sent from my SGH-T999 using xda app-developers app

I was able to get 32 hours on average with CM 10.1 and KTunez kernel. I recently switched to the Stock latest TW and I'm seeing 22-24 hours with the KTunez kernel. I am rooted and removed all the bloatware.

I'm running stock rooted for now. I hardly have even noticed any battery drain on my phone. Stock Battery, nothing really battery-heavy, no customer kernels. However I dont really see the use of this Sidebar thing. Its like
HAY GUIZ LETS PUT THE UBUNTU UNITY BAR ON ANDROID HUEHUEHUEHUE SO CLEVER!
But in all seriousness, I seem to be running just fine. So I cant really vouch for Multiwindow being the culprit. I may run some tests though.

I don't remember what it was before. But usually by the time I went to bed, it was in the 40's and sometimes the 30's if it was a heavy day for me. Now it drops into the teens.
I see that as of today, the phone has been discharging for just under 4 hours and is already at 88%. And I haven't even used the phone in any way today before checking it right now. Shows "Google Services" as 41% of the battery use. But that only shows CPU total at 33 seconds. Next item is "Device Idle" at 15%. So I don't understand why it's down to 87% in 4 hours of basically doing nothing.
Though I don't think that info alone means anything to me right now as I don't recall what that info was like on 4.1.1, only that my battery % by bedtime is significantly lower than when on 4.1.1
I was just curious how many other Tmobile people experienced the same thing when going from 4.1.1 to 4.1.2. All stock that is.
I don't have time to deal with wiping the phone clean and starting over. But I may try that someday. My phone never gets hot and I never see the CPU getting much use at any given time.
I do wonder about facebook though. I think it also did an update of it's own around the same time I did the 4.1.2 update. I will check into that.

I have found battery life to be about the same, at first it wasn't that great but now I was able to get over 2 days with minimal use 4g on all day. With normal I use I still get better battery life that 4.1.1
Sent from my SGH-T999 using xda app-developers app

aamir123 said:
I have found battery life to be about the same, at first it wasn't that great but now I was able to get over 2 days with minimal use 4g on all day. With normal I use I still get better battery life that 4.1.1
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
I am confused. So it wasn't good and then it just became good over time? Or have you made some setting changes?

xenon2000 said:
I am confused. So it wasn't good and then it just became good over time? Or have you made some setting changes?
Click to expand...
Click to collapse
Well when I first updated it was stock and battery life didn't seem very good but I've since flashed a custom rom and all is well. Also I think stock rom got better battery with use, maybe had to settle in? But within 3 days of using 4.1.2 my battery was back to normal again.

Wicked v3 with faux kernel

I have installed wicked v3 and the faux m version kernel. The first day it seemed like my battery life was much better. However now the battery life is actually worse. I am only getting 5 or 6 hours with medium use before my phone is almost completely dead and I have to recharge it. I also have it underclocked in set cpu. Can anyone suggest what I could have done wrong?
Thanks
Drew
Sent from my SGH-M919 using xda app-developers app

dclifford said:
I have installed wicked v3 and the faux m version kernel. The first day it seemed like my battery life was much better. However now the battery life is actually worse. I am only getting 5 or 6 hours with medium use before my phone is almost completely dead and I have to recharge it. I also have it underclocked in set cpu. Can anyone suggest what I could have done wrong?
Thanks
Drew
Sent from my SGH-M919 using xda app-developers app
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install wakelock detector (free) or/and betterbatterystats (paid.. like 2 bucks). It might not even be a problem with the rom/kernel, but more with wakelocks causing your cpu to run while the screen is off. if the wakelocks are out of control, you'll see battery life disappear fast even if you put down the phone for a few hours. using the aforementioned two programs you can diagnose whats keeping your phone awake, then google the name of the wakelock (or go to the betterbatterystats thread in one of the forums here), and decide to freeze, delete, greenify or do whatever to fix the problem.
keep in mind that betterbatterystats will detect more kinds of wakelocks, but will not be very friendly to people who can't understand whats what. wakelock detector will detect most wakelocks, is very clean, but the one wakelock it doesnt detect may be burning your cpu.
if you want to extend your battery life a bit further, you can use tasker to turn off certain things that use battery like: 4g, wifi, gps, and turn them on when you: need them, have the screen on, open a certain application, at a certain time, etc.

dclifford said:
I have installed wicked v3 and the faux m version kernel. The first day it seemed like my battery life was much better. However now the battery life is actually worse. I am only getting 5 or 6 hours with medium use before my phone is almost completely dead and I have to recharge it. I also have it underclocked in set cpu. Can anyone suggest what I could have done wrong?
Thanks
Drew
Sent from my SGH-M919 using xda app-developers app
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5-6 hours of screen time??
Sent from my SGH-M919 using xda app-developers app

Thank you for responding. I have installed wakelock and will see what the results show later today. If I upload a screen shot of the results on here would you help me review them? I fall into that category of user who probably will not know what's what as I am just diving into the world of kernels. Also I am only getting about 5-6 hours total time, not screen time. I've seen others say they are getting 10-15 hours or more with faux kernel. For now I have actually switched over to ktooneez kernel due to the poor battery life I was getting from faux kernel. It seems a little better so far but still not near what I was expecting from others comments.
Thanks.
Sent from my SGH-M919 using xda app-developers app

dclifford said:
Thank you for responding. I have installed wakelock and will see what the results show later today. If I upload a screen shot of the results on here would you help me review them?
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yes
dclifford said:
For now I have actually switched over to ktooneez kernel due to the poor battery life I was getting from faux kernel. It seems a little better so far but still not near what I was expecting from others comments.
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then it probably isnt a problem with your kernel