Develop Bugs

Kernel issues

What would you say is the best battery saving kernel? I need to go a days worth of battery , and I use my phone heavily.
I use jd mod 102310.
I'm currently testing kings cfs#8 but its dying fast why? I just loaded the rom after a full charge.
How long will the battery life start to kick in?
Please help me.
Advice is needed.
Sent From My HTC EVO

Check these threads:
http://forum.xda-developers.com/showthread.php?t=820673
http://forum.xda-developers.com/showthread.php?p=8908771#post8908771

The funny thing about kernels is that it changes from phone to phone, I may get the best battery life with kings#9 and it might drain you're phone faster than there before.... I use calks 1.4 with kk#9 and I'm getting the best battery life I've ever seen with the evo. Else check to see if ur phone is sleeping properly.
Sent from my PC36100 using XDA App

I don't expect to convince anyone to go back to stock, but the newer ota updates and roms have fantastic battery life. I can't say that I have noticed any difference in battery life with the 3.30 but I haven't taken he time to observe. But 3.29 was a big improvement, or so it seemed.
I go about 40 before charging. And I'm a heavy user.
Sent from my PC36100 using XDA App

Pbrussell said:
The funny thing about kernels is that it changes from phone to phone, I may get the best battery life with kings#9 and it might drain you're phone faster than there before.... I use calks 1.4 with kk#9 and I'm getting the best battery life I've ever seen with the evo. Else check to see if ur phone is sleeping properly.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
what kind of numbers are you getting??

Unsolved Issue, I give UP!

I can not understand why it happened to me, i have been using gio for over a year now with 2.3.3 and my battery could take out 2 days with music, wifi and games but a month back i flashed Cm7.2 and the battery drained like hell.
This battery issue is killing me and i tried everything, calibration, wiping stats, flashing other ROMs at 100% and alot of other tweeks but now i give up.
I think its battery problem but how can this problem arise, iam thinking to buy a new battery.
Does anyone has same issue and changed the battery?
Was the problem corrected after new battery?
Please reply as your replies would really help me
Thank You!

reflash but wipe all battery settings and retrain all wipes battery effects are software is obscure complaining(intelligent?) battery deductions
but once max==min it fails
wipe battery after 24h load then drain as far as possible at the end reboot untill it does not start any more or boot cwm
then rest a while and boot Rom.
maximizes spread software min and max
but you can never beat a real dead battery
Enthusiastic Gio User
Very glad with the work done
But sometimes a pusher for results( nothing bad intended)

So u saying, i shuld buy new battery?
I already said im gonna buy a new one as this one is swollen.
I asked if anyone used new battery after the battery is swollen and their experience.
Will 1500mAh battery on gio do good?

1500 is fine, just remove batterystats
Sent from my GT-S5660 using xda app-developers app

deadly46 said:
So u saying, i shuld buy new battery?
I already said im gonna buy a new one as this one is swollen.
I asked if anyone used new battery after the battery is swollen and their experience.
Will 1500mAh battery on gio do good?
Click to expand...
Click to collapse
1500 not creat for gio
u should buy same 1350
my gio also after a year Expired

no.
Sent from my GT-S5660 using xda app-developers app

I have also problem with battery after about 14 months: battery will go down faster than before (in normal use - not wifi, data, games...)
- Android 2.3.6
- stock ROM
- rooted
- battery stats/history not wiped

batteries dont life forever, just like humans. however, batteries are smaller, also in life. after some time and lots of charging it will lose some Mah and not have the 1300 like it has normally but maybe 1200, and even less if you use it a long time.
Sent from my GT-S5660 using xda app-developers app

voetbalremco said:
batteries dont life forever, just like humans. however, batteries are smaller, also in life. after some time and lots of charging it will lose some Mah and not have the 1300 like it has normally but maybe 1200, and even less if you use it a long time.
Sent from my GT-S5660 using xda app-developers app
Click to expand...
Click to collapse
Yes it is known thing of all batteries (in phones, notebooks etc)... ...but it is good to know, that battery of Gio will go down after about one year (cca 150x chargings)

[Q] What ROM do you think is the best on battery life?

I have a ROMed Galaxy Note 2 and the battery life is amazing. My son on the other hand has a stock Galaxy S3 and it's the worst battery life I've ever witnessed. It's the typical draining while in standby issue reported by many S3 users. Bottom line, his phone is getting a ROM tonight before this phone melts down. Problem is, which one do I choose? There are so many and it would take me months to read thru every post to determine which one is right for him. So for now I'm going to focus on what really matters most, battery life.
Which ROM have you read about or used that you feel is battery life winner?
Thank you.

Hands down i747z
Sent from my SGH-I747M using xda app-developers app

I haven't been running ROMs for too long on my S3, but I'd have to say that AOKP by Task650 gave me the best battery life over some other ones I flashed.

Task560 ROM for sure.
Sent from my SGH-I747 using xda premium

Did somebody say my name?

We are lucky to have MANY great ROM's out there. There are so many great devs here that go out of their ways to make the experience better. I highly suggest trying as many as you can, because each phone, after much experience with my ROM's, are different. Make a nandroid backup and try a bunch! What I'm getting at is that there are too many well made ROM's here to pick one. Flash away. Oh and make sure you turn off google now cards and locations...that will drain your battery like no other on this phone. Best of luck!

task650 said:
Did somebody say my name?
Click to expand...
Click to collapse
Task560 is just a little bit less than you.

I must say I'm running task650's AOKP build (I have been since I got the phone :good and my battery life has been nothing but immaculate. Here's a few screenies showing you my averages. Now mind you me my device and my daily operations will differ from everyone else's but still gotta give credit where credit is due. Oh btw I'm running it with tasks underwear kernel. Sorry ktoons
Sent from my SGH-I747 using xda premium

I think most of the roms have pretty good battery life. I'm on Vanilla Rootbox and i'm getting good battery life.

Thanks for all the input guys. Most of those mentioned were at the top of my list. Instead, I chose a "stable" Rom not mentioned here in this thread and it was buggy from the jump. I quickly bailed and went with CM10 and life is good so far.
Sent from my GT-N7105 using xda premium

DaRTHSTALKER is the first rom I've ever ran that I noticed a significant improvement in battery life. Very noticeable. None of the others have ever caught my attention before.

From cm10.1 nightly 1/31
All I did was turn GPS and auto sync off
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

I'm on Slimbean 4.2.1 RC1 with lean kernel and I have to say it is buttery smooth and stable, fast as can be, and I'm almost two days into it with ~45% charge. Loving it

For longest time I was swearing at CM10 / CM10.1 and than I found a thread about what affect battery and now both TW and CM based roms that I use are about the same...
To get great battery life follow the simple rules:
- stay away from colour. The darker the theme / icons are the better the battery life. Some go as far as to get inverted gapps...
- no live wall paper. It will affect battery life... yes, the darker the wallpaper the better the battery life...
- turn off GPS , bluetooth , nfc and everything else that you don't need... turn it back on when you need it...
I have 15 toggle mod and I even turn off data when I don't need it. (I turn it back on once every couple of hours to get e-mail and notifications... than turn it back off... this also prevents rouge apps from dialling back home to mothership...)
- if I travel from one location to the other I toggle airplane mode on and off... this forces modem to look for strongest tower... the strogner the tower the less power you need... hence less battery consumption...
- Use Ti Backup on roted rom... unistall what you obviously don't use..
- Google apps that run that you don't know what they do... stop or unistall those that you don't need...
- Use fierwall... block everything that doesn't need to talk to internet ... less you use antenna longer the battery life...
Also, if going to new ROM wipe battery stats and let battery fully discharge couple of times. This helps as well...
Follow these simple rules and don't be surprised if your battery life doubles regardless of the rom...
Cheers

duke4c said:
For longest time I was swearing at CM10 / CM10.1 and than I found a thread about what affect battery and now both TW and CM based roms that I use are about the same...
To get great battery life follow the simple rules:
- stay away from colour. The darker the theme / icons are the better the battery life. Some go as far as to get inverted gapps...
- no live wall paper. It will affect battery life... yes, the darker the wallpaper the better the battery life...
- turn off GPS , bluetooth , nfc and everything else that you don't need... turn it back on when you need it...
I have 15 toggle mod and I even turn off data when I don't need it. (I turn it back on once every couple of hours to get e-mail and notifications... than turn it back off... this also prevents rouge apps from dialling back home to mothership...)
- if I travel from one location to the other I toggle airplane mode on and off... this forces modem to look for strongest tower... the strogner the tower the less power you need... hence less battery consumption...
- Use Ti Backup on roted rom... unistall what you obviously don't use..
- Google apps that run that you don't know what they do... stop or unistall those that you don't need...
- Use fierwall... block everything that doesn't need to talk to internet ... less you use antenna longer the battery life...
Also, if going to new ROM wipe battery stats and let battery fully discharge couple of times. This helps as well...
Follow these simple rules and don't be surprised if your battery life doubles regardless of the rom...
Cheers
Click to expand...
Click to collapse
While most of this makes sense, I have to disagree with discharging the battery fully. This actually reduces battery life drastically.

aybarrap1 said:
While most of this makes sense, I have to disagree with discharging the battery fully. This actually reduces battery life drastically.
Click to expand...
Click to collapse
I agree but idea is that you let the kernel optimize it by itself.
So you do this only a few times on new rom and that's it...
As for myself I tend to plug in the S3 to charge as soon as I hit 60-70%...
(whenever I can of course - i actually keep one charger at home and one at work)
SIDENOTE:
Forgot to mention the widgets... to me they're just short-cuts and if you set them for automatic update (weather being prime example) they'll just waist battery and bandwith... (it takes about 1 sec to turn on the data from 15 toggle mod and 1 more to start the app I want updated - email weather whatever... to me this is a small price to pay for extended bat life...)

If I may toot my own horn, how about this guy getting four days from one charge with my ROM and ktoonz's kernel? http://forum.xda-developers.com/showpost.php?p=36384974&postcount=95
Your mileage may vary but I usually get about a day and a half or two days from one charge with the stock kernel that's included in the ROM

agriff said:
If I may toot my own horn, how about this guy getting four days from one charge with my ROM and ktoonz's kernel? http://forum.xda-developers.com/showpost.php?p=36384974&postcount=95
Your mileage may vary but I usually get about a day and a half or two days from one charge with the stock kernel that's included in the ROM
Click to expand...
Click to collapse
Awesome stats
How in the world did he get the screen to only consume at 12%
Mine currently Displays at 54%

Blackjelly v1.01
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Auto update widgets kill my batt life also!
Sent from my SGH-I747 using xda app-developers app

[Q] battery life on freegs3

recently flashed to the freegs3 rom with stock kernal and touchwiz launcher. I have already changed to two file names and added .bak to then of the file names and rebooted. My android system is at 40% after 6.5 hours of use. My phone is at 54% and usually would be at about 75% when i used MIUI or Blazer. Anybody have any suggestions?

http://forum.xda-developers.com/showthread.php?t=1830157

thank you
i looked through that whole forum and its not really any of my settings. My android system is taking all of the battery where as when i was on MIUI and Blazer rom, id get wayyyy better battery life on. I seen that qbking said that the battery life is better on this rom than on blazer so it doesnt make any sense that im at 40% after 8 hours. Before it could be 6 p.m. and i would still have 70%

njoy3219 said:
i looked through that whole forum and its not really any of my settings. My android system is taking all of the battery where as when i was on MIUI and Blazer rom, id get wayyyy better battery life on. I seen that qbking said that the battery life is better on this rom than on blazer so it doesnt make any sense that im at 40% after 8 hours. Before it could be 6 p.m. and i would still have 70%
Click to expand...
Click to collapse
Well you could have wakelocks, too many apps running in the background, maybe your phone keeps scanning for reception that isnt there (as in you have unnecessary radios turned on)
Try using BetterBatteryStats and it'll give you a ton of info about whats draining your battery
And did you just recently switch to FreeGS3? It usually takes a couple cycles before you start seeing the true battery life, so give it some time before you reach a verdict

i have all the settings the same as they were on blazer rom and MIUI. There is a reason that android system is using 2x the ammount of battery than the screen is. Not to sound cheap but i cant afford to buy the app to check my battery stats, but like i said this never happened on those 2 roms and most everyone else is reporting amazing battery times on this rom. I love this rom alot and dont want to have to switch back. I guess ill see what happens in the next two days

njoy3219 said:
i have all the settings the same as they were on blazer rom and MIUI. There is a reason that android system is using 2x the ammount of battery than the screen is. Not to sound cheap but i cant afford to buy the app to check my battery stats, but like i said this never happened on those 2 roms and most everyone else is reporting amazing battery times on this rom. I love this rom alot and dont want to have to switch back. I guess ill see what happens in the next two days
Click to expand...
Click to collapse
Yeha I understand about the money issue, I'm pinching pennies myself because life is hard. But try to get one of those free ones if you can then, it takes a couple of those to equal what BBS does, so look around and see what you can find

BBS is free to XDA members. Search the forum and you will find it.
Transmitted with a portable device using Xparent Blue Tapatalk 2

edfunkycold said:
BBS is free to XDA members. Search the forum and you will find it.
Transmitted with a portable device using Xparent Blue Tapatalk 2
Click to expand...
Click to collapse
That too, forgot about it

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.