Related
Just wondering if anyone can help me understand how there can be such a drastic difference in battery life between Froyo and GB. I've been using BAMF Roms mostly since I rooted my T-Bolt and with above average use on 4G half the day, on Wifi the rest, and get 20>24 hrs battery life. I flashed All the GB Roms after each update, because the lockscreen keeps calling me back lol, but I'm lucky if I get 6 hrs usage with the same basic setup.
I charge my phone every morning when I wake up to 100% and rarely have to charge again until the the next morning with BAMF 1.7 unless I'm flashing mods or streaming a lot of audio and video. I went to sleep at 11:30pm last night with 19% battery and woke up with 14%, insane! With BAMF 2.1 the night before, I not only had to charge my phone 2X that day after very little usage, but went to bed the same time with 100% battery and woke up with 47%. That was with everything turned off, wifi, mobile net, and underclocked to 245mhz with the screen off.
I would just like to know how there can be such a big difference, especially with standby time. Thanks.
It is a known fact that GB is more resource hogging than Froyo. Plus the fact that the GB builds we see here are all based on an alpha leak.. which may not be the best representation of GB. It perhaps has to do with how GB handles memory and how much resource it sucks in to accomplish that.
Just my theory.
I guess what I really can't understand is the standby time. If the screen is off, shouldn't the phone be using less resources? 5% loss on Froyo at night compared to 53% loss with GB, seems like a huge difference to me.
Having some serious battery drain too since going to 2.1. Was thinking about trying a different kernel. Have you tried anything. Trying to find a link but think I saw some posts that Imoseyen's kernels were pretty good.
http://forum.xda-developers.com/showthread.php?t=1086518
fotd said:
Having some serious battery drain too since going to 2.1. Was thinking about trying a different kernel. Have you tried anything. Trying to find a link but think I saw some posts that Imoseyen's kernels were pretty good.
http://forum.xda-developers.com/showthread.php?t=1086518
Click to expand...
Click to collapse
AFAIK, all GB kernels are Imoseyen's or use his as the base.
johnkc1975 said:
I guess what I really can't understand is the standby time. If the screen is off, shouldn't the phone be using less resources? 5% loss on Froyo at night compared to 53% loss with GB, seems like a huge difference to me.
Click to expand...
Click to collapse
53% loss overnight in standby tells me you probably have a bad app somewhere.
Mine typically loses about 15-20% max overnight on GB Roms.. (and I've used GB theory, Liquid Roms and Gingeritis)...This itself is more than Froyo Rom which for me has been typically about 5% loss max on standby overnight.
Most importantly.. when I am working on the phone.. GB Roms tend to lose charge a lot faster than Froyo Roms.. which is where the real pain is.
johnkc1975 said:
I guess what I really can't understand is the standby time. If the screen is off, shouldn't the phone be using less resources? 5% loss on Froyo at night compared to 53% loss with GB, seems like a huge difference to me.
Click to expand...
Click to collapse
I've seen the same thing. After about 4 hours yesterday on my extended battery I dropped 2%!! With a GB ROM I lose 10% per hour-ish. I'm just sticking with FroYo until we get a better GB leak that is more stable. I was on GB/CM7 on my Inspire and the battery life was great so I know GB isn't as bad as it is on our device we just have an early build of GB. It will get better hopefully sooner rather than later.
I'm not sure if its GB or the roms but there are additional features in GB/GB roms that contribute to the battery loss. These battery tips are in chingy's gingeritis post. Go through these and hopefully these will increase your battery life. I didn't come up with these tips. Credits to Boskoel03
Battery Tips From Boskoel03
Disable "Tell HTC" service: Settings -> About Phone ->Tell HTC -> Disable
Disable Software Updates: Settings -> About Phone ->Software updates -> Uncheck Software Updates
change Wi-Fi Sleep policy: settings -> wireless & networks ->Wi-Fi Settings ->15 min
Disable Phone Finder: Settings -> Location
Disable Weather Sounds & Clock Widget Full Screen Animation
Increase Facebook/Twitter/Stocks/Anyone otther accounts sync interval to 4hours or more
Use Auto-Brightness
Disable Haptic Feedback
Use Wifi when available
Set screen timeout to 30 seconds
Standalone GPS should be OFF when not using navigation
Refrain from playing angry birds while on the pooper
fotd said:
Having some serious battery drain too since going to 2.1. Was thinking about trying a different kernel. Have you tried anything. Trying to find a link but think I saw some posts that Imoseyen's kernels were pretty good.
http://forum.xda-developers.com/showthread.php?t=1086518
Click to expand...
Click to collapse
Other than re-flashing after the Rom's are updated, no, I have not tried any different kernals because I assume the devs know a lot more than me, so I like to stick with the kernals that come with the Roms.
kriskmk said:
53% loss overnight in standby tells me you probably have a bad app somewhere.
Mine typically loses about 15-20% max overnight on GB Roms.. (and I've used GB theory, Liquid Roms and Gingeritis)...This itself is more than Froyo Rom which for me has been typically about 5% loss max on standby overnight.
Most importantly.. when I am working on the phone.. GB Roms tend to lose charge a lot faster than Froyo Roms.. which is where the real pain is.
Click to expand...
Click to collapse
I checked everything for rouge apps and found nothing excessively using resources, and I have had the same results with Gingeritis and Theory.
johnkc1975 said:
I checked everything for rouge apps and found nothing excessively using resources, and I have had the same results with Gingeritis and Theory.
Click to expand...
Click to collapse
Use Titanium Backup to Freeze All User apps (under Batch Option). Do this before you go to bed. In the morning see what the % Loss is.. Then you can Unfreeze them all one by one and find out the culprit.
Last night when I went to bed my GB rom had 63% juice left.. this morning I was at 47%.
Also, I am using liquid Rom w/ stock battery.
kriskmk said:
Use Titanium Backup to Freeze All User apps (under Batch Option). Do this before you go to bed. In the morning see what the % Loss is.. Then you can Unfreeze them all one by one and find out the culprit.
Last night when I went to bed my GB rom had 63% juice left.. this morning I was at 47%.
Also, I am using liquid Rom w/ stock battery.
Click to expand...
Click to collapse
That's a good idea , thanks.
Blame sense.
Sent from my ThunderBolt using XDA App
darkrom said:
Blame sense.
Sent from my ThunderBolt using XDA App
Click to expand...
Click to collapse
This, or the fact that it's an alpha leak. CM7 has ridiculously good battery life in comparison to both froyo and gb based sense roms, especially the latter.
Sent from my ThunderBolt using XDA Premium App
My battery is perfect on KC1 and most of froyo roms. However when i use ANY GB rom, the battery drains like crazy under the same settings. I calibrated the battery and no difference. Anybody got the same issue? and a fix?
The battery stats in Settings > About phone > Battery use can show you what apps are draining your battery the quickest.
Remember there haven't been too many mods made for GB yet like an undervolted/custom kernel. Just wait a little while, it'll come.
Thanks for the reply.
I was comparing both stock Froyo and GB. So the issue has nothing to with modified kernels and stuff i guess. Just wanted to know why GB drains 2-3 times faster than froyo.
BTW, the battery graph shows,
1. Display
2. Android system
3. Android OS
as first three items in the list
any idea?
xda_rosh said:
Thanks for the reply.
I was comparing both stock Froyo and GB. So the issue has nothing to with modified kernels and stuff i guess. Just wanted to know why GB drains 2-3 times faster than froyo.
BTW, the battery graph shows,
1. Display
2. Android system
3. Android OS
as first three items in the list
any idea?
Click to expand...
Click to collapse
That'd be just from the phone being on. I noticed it a bit too, but I manually turn off things like Wifi, etc to keep my battery from draining. Right now my phone is at 44% battery after being unplugged for 11 hours, so I see what you mean about the faster battery drain, but nothing as big as 2 to 3 times, that would mean it'd be completely drained in about 6 hours.
Hey all
I am loving ICS on my Xoom. However, I have noticed that "Android OS" is taking up tons of battery, with high awake times. I have had it unplugged for about 3 days, and the screen has only been on for like 2 hours. However, "Android OS" is the highest battery eater on the list and has kept the device awake for over 10 hours. Anyone else seeing this? I am having the same problem on my Galaxy Nexus. Thanks for any input.
Have you tried CPU Spy? Mine shows deep sleep when the screen is off. Also screen is the biggest battery user, by far.
Yeah. I used it and it said that it spent 2 hours at 1000mhz (amount of time the screen was on) and 12 hours at 216mhz and 76 hours in deep sleep. That 12 hours is taken by Android OS, and I don't know why. It is killing my battery. Does anyone know why Android OS is staying awake so much?
It is probably apps that are trying to sync. See what you have that might be trying to update/sync.
You also may want to try uninstalling some older applications. I think I read somewhere that some older non-ICS optimized apps can prevent the OS from sleeping.
HuckFinn said:
You also may want to try uninstalling some older applications. I think I read somewhere that some older non-ICS optimized apps can prevent the OS from sleeping.
Click to expand...
Click to collapse
Do you know of any that are especially problematic?
I have 120 apps. Isolating the problem is going to prove to be difficult. Any ideas which ones? This has been happening with my Nexus for 3 weeks now, nobody else is seeing Android OS taking up a lot of awake time?
tysdroid17 said:
Hey all
I am loving ICS on my Xoom. However, I have noticed that "Android OS" is taking up tons of battery, with high awake times. I have had it unplugged for about 3 days, and the screen has only been on for like 2 hours. However, "Android OS" is the highest battery eater on the list and has kept the device awake for over 10 hours. Anyone else seeing this? I am having the same problem on my Galaxy Nexus. Thanks for any input.
Click to expand...
Click to collapse
Just wipe your system clean and reinstall your apps. That will fix all your ICS upgrade issues.
Are you syncing email via activesync? If so, turn it off for a while and check if it makes a difference. This is what makes android os go through the roof for me on the tablet and the phone!
Sent from my GT-I9100 using Tapatalk
tysdroid17 said:
I have 120 apps. Isolating the problem is going to prove to be difficult. Any ideas which ones? This has been happening with my Nexus for 3 weeks now, nobody else is seeing Android OS taking up a lot of awake time?
Click to expand...
Click to collapse
Is that 120 downloaded apps or 120 altogether (including system apps)? Either way, disabling auto-sync and background data before putting your Xoom down could/should help curb the excess battery drain. The only issue with that is certain apps, like Market, won't function without background data enabled but that shouldn't be an issue if you won't be using your Xoom for a while. You could search the forums or Google on how to create scripts to disable/enable background data and auto-sync for you when you put the device to sleep and wake it back up, respectively. Or just search the Market for an app that does that for you.
Do you leave your wireless radios on (wifi, bluetooth, etc.) while not using your Xoom? Setting wifi to disconnect while sleep may also help.
Thank you all for your input, however I think many people do not understand what I am saying...
I understand how to reduce battery drain IN GENERAL, what I am asking is, are people seeing battery drain faster overall on ICS compared to HC? I am, and I think that Android OS is the culprit. Is anyone else experiencing this?
Thanks!
You know, I had the same exact problem when I installed the first fully functional EOS ICS rom for my Verizon Xoom. The Android OS kept draining the hell out of my battery. I went from having about 5 days of battery life to 1 or two tops.
I decided to try a different rom. Since I don't have Mobile Internet, I decided to experiment and installed the Wingray Version of the CM9 ICS Leak(Kang) and I haven't had this issue since.
So I'm not sure what fixed it, was it because I tried a different type of rom, or was it because I downloaded the Wingray version? Not sure, but either way the problem stopped.
Perhaps try a different rom if you're rooted?
I am experience this issue on my Nexus. Try using easy batter saver. It extends my battery life very well.
https://market.android.com/details?...GwsMSwxLDEsImNvbS5lYXN5LmJhdHRlcnkuc2F2ZXIiXQ..
I'm seeing some of the same issues on EoS nightly 49. I'm down to 88 percent with barely any use. 14 hours of up time. Android OS at 3hrs and 27 mins up time.
tysdroid17 said:
I understand how to reduce battery drain IN GENERAL, what I am asking is, are people seeing battery drain faster overall on ICS compared to HC? I am, and I think that Android OS is the culprit. Is anyone else experiencing this?
Click to expand...
Click to collapse
I'm not, if anything ICS is giving me better battery life than HC. Even considering I'm now overclocked and using my Xoom a lot more.
I think a lot of people misinterpret the battery % used though. Just because something is using a higher percent of battery does not mean its sucking your battery down, there will always be something at top of that % list, it doesn't mean there's a problem. It's a relative list. It's entirely possible (and reasonable IMO) to have Android OS at the top of your list if you've used your device for only 2 hours over 3 days! You barely used it, what would you expect to be at the top?
that's a known problem,
Android OS is also taking up a lot in the stats for e.g. the Galaxy S on its ICS port
a related question though:
I'm mainly using my Xoom for ebook reading (PDFs via ezPDF and/or repligo reader) - which ROM in your opinion offers the better battery runtime
Team Eos ICS ROM
or
the Team Tiamat Moray ROM
?
Many thanks in advance !
Android OS battery bug 4.0.3
If your android device has been off for a considerable amount of time, Android os should not be at the top of battery usage list; phone idle would be in that spot under normal situation. However, there is a battery bug in 4.0.3. After installing 4.0.4 on my Gnex it fixed the problem (from my understanding 4.0.4 was only for the Gnex as its a newer device and the Xoom wifi is slowly becoming obsolete). I'm guessing this will be fixed in 4.0.5 that will be released sooner or later... my guess is later with aging devices.
My Wifi only Xoom with Team EOS is getting 4+ days of battery life and my screen is whats taking most of the battery. I am using the latest nightly as well as the latest GAPPs. There is something running on your Tablet that is casing the problem you are having. I am having no probles with ICS at all and having great battery life. Have you tryed using maybe setcpu to setup a screen off profle. I would maybe think about doing a full wipe and starting over with the latest of everything.
My android OS was at the top of my battery usage (74%) even when in sleep mode. I used to get 5-6 days, now I get only 2 at best.
I disabled wireless and the drain goes away, android os goes back down to 2-3%.
Any ideas?
ICS 4.04 Xoom WiFi only.
Thanks
Bruce
tysdroid17 said:
Thank you all for your input, however I think many people do not understand what I am saying...
I understand how to reduce battery drain IN GENERAL, what I am asking is, are people seeing battery drain faster overall on ICS compared to HC? I am, and I think that Android OS is the culprit. Is anyone else experiencing this?
Thanks!
Click to expand...
Click to collapse
mine is draining somewhat fast when i use wireless, but as soon as thats disabled im good to go
Here is the thing, i'm enjoying the whole end of ghost calls thing BUT since I flashed the 21e ROM, my battery drainage is 'over the roof', i lose almost 20 to 30% in 2 hours of standby, and its been happening with both promethius and bluekernel. I'm on Promethius 1.4+ ROM.
I've deleted system apps, like I've done since ThiaiZ ROMS, which I'm missing now but no significant increase in battery life.
Any thoghts? I'm guessing its not just me, I've seen similar complaints in other topics but no resolution.
Same here, I think that is wi-fi related, since I've changed the wifi sleep policy to "When the screen is off" my battery life is ok....
I think there are a bunch of things that are killing the battery:
- screen brightness / auto brightness (not working properly, no change when less than 50% brightness?? I have mine set to auto but it don't feel right...)
- wifi (definitely a bunch of issues since day 1 of this phone, I leave mine off when screen off too even though its annoying waiting for connection)
- data (i've noticed using apps like 2x battery, or juice defender can help a lot which disables data when screen is off)
- poorly programmed LG integrated software... I freeze as many LG apps as possible in system using Titanium Backup, helps a bit too.
- incorrectly calibrated battery, re-calibrate with CWM. Do a full charge, then reset battery stats in CWM and let the phone fully drain till shut down and then re-charge non-stop to 100% again. Then its properly calibrated.
Hope any of that helps, it seems to have helped me a bit. I can get between 18-30 hours of mixed use, but more to the light/standby side.
vitorcruzbr said:
Here is the thing, i'm enjoying the whole end of ghost calls thing BUT since I flashed the 21e ROM, my battery drainage is 'over the roof', i lose almost 20 to 30% in 2 hours of standby, and its been happening with both promethius and bluekernel. I'm on Promethius 1.4+ ROM.
I've deleted system apps, like I've done since ThiaiZ ROMS, which I'm missing now but no significant increase in battery life.
Any thoghts? I'm guessing its not just me, I've seen similar complaints in other topics but no resolution.
Click to expand...
Click to collapse
Actually the 21E stock ROM/kernel has better battery life than any previous GB or Froyo stock ROM, like many people have already reported here. I'm loosing only 1-2% overnight on standby, so if you lose 20 to 30% in just 2 hours of standby, then the problem is not the 21E but something else.
The best way to check is the problem is related to the stock or custom 21E ROM/kernel, is to go back to the stock 21E. If this is too time consuming, you could follow the recommendations of crazycage, or check/disable any apps that cause battery drain (like, turn off background sync or apps that connect periodically to the net, like mail, news feeds etc)
Thanks guys, but the drainage happens even after these steps, with this phone I have became used to doing all these steps after flashing a new rom, i delete or freeze most of the system apps, i only activate wifi when i use it and background data is off almost all the time.
The only thing I'm used to that is not good for battery is keeping the brightness at maximum, but on older roms battery life was ok, I could get It through the day with no major issues.
Do anybody have the stock 21e kernel in a flashable package? 'Cause in the past two weeks I have flashed and reflashed it over and over to get it to work and flashing it again would really be a pain in the a.
vitorcruzbr said:
Thanks guys, but the drainage happens even after these steps, with this phone I have became used to doing all these steps after flashing a new rom, i delete or freeze most of the system apps, i only activate wifi when i use it and background data is off almost all the time.
The only thing I'm used to that is not good for battery is keeping the brightness at maximum, but on older roms battery life was ok, I could get It through the day with no major issues.
Do anybody have the stock 21e kernel in a flashable package? 'Cause in the past two weeks I have flashed and reflashed it over and over to get it to work and flashing it again would really be a pain in the a.
Click to expand...
Click to collapse
your battery may not be holding a charge I have heard of others that had bad battery
sent from my acidhazard thrill
wayno140 said:
your battery may not be holding a charge I have heard of others that had bad battery
sent from my acidhazard thrill
Click to expand...
Click to collapse
But it was ok before 21e
vitorcruzbr said:
Thanks guys, but the drainage happens even after these steps, with this phone I have became used to doing all these steps after flashing a new rom, i delete or freeze most of the system apps, i only activate wifi when i use it and background data is off almost all the time.
The only thing I'm used to that is not good for battery is keeping the brightness at maximum, but on older roms battery life was ok, I could get It through the day with no major issues.
Do anybody have the stock 21e kernel in a flashable package? 'Cause in the past two weeks I have flashed and reflashed it over and over to get it to work and flashing it again would really be a pain in the a.
Click to expand...
Click to collapse
You mean that you've re-flashed a clean stock 21E ROM/kernel and still have battery drainage without deleting/freezing apps or installing new ones? That's strange because most people actually report better battery life with the 21E than any previous ROMs.
If you think that it's not a faulty battery like wayno140 suggested, you could go back to an older GB ROM to have a test.
No, only did first boot on stock 21e, and flashed Promethius, deleted system apps and did all the battery-friendly steps but still no improvement
Hi, so I recently got an Infuse from someone that is still on Froyo and I figure I might as well upgrade to a custom rom.
Since I care about battery life the most, I figure I would ask which version of Android provides the best battery life for the Samsung Infuse: Gingerbread or Ice Cream Sandwich.
I probably won't be running apps that fetch/push for data a whole lot, which obviously helps the battery life. But I thought I'd ask to get someone's opinion on this specific phone and a comparison between Gingerbread vs ICS before picking a rom.
And the winner is... Gingerbread!
Sent from my sweet & buttery Infuse
abc617 said:
Hi, so I recently got an Infuse from someone that is still on Froyo and I figure I might as well upgrade to a custom rom.
Since I care about battery life the most, I figure I would ask which version of Android provides the best battery life for the Samsung Infuse: Gingerbread or Ice Cream Sandwich.
I probably won't be running apps that fetch/push for data a whole lot, which obviously helps the battery life. But I thought I'd ask to get someone's opinion on this specific phone and a comparison between Gingerbread vs ICS before picking a rom.
Click to expand...
Click to collapse
Gingerbread is a better battery saver. Although i get decent battery on ics and jellybean. I know i perfer all that ics/jb has to offer in features over having battery life. But for what your asking id suggest AEON or the stock gb. Aeon is very stable and has some cool extras without much battery drain
Sent from my SGH-I997 using xda app-developers app
andros11 said:
And the winner is... Gingerbread!
Click to expand...
Click to collapse
Really? I got faaar better battery life on Scott's Paranoid Android ICS build than I EVER did for any Gingerbread rom...
Honestly, I don't even remember by now
I have never payed that much attention to battery life..
usually lasts all day for me on JB, that's all I need
Sent from my sweet & buttery Infuse
the more recent ics and jelly bean kernels get great battery life due to fixed bt and wifi drivers (the wifi driver and binary were taken from another device from what i understand) and more stable cpu clock code than it had initially. not too much more than stock but i have to say it is better for me. but i guess it all depends on usage. one may have better standby vs awake battery life or something. the available kernels have been this way for atleast a month. when we start to see more kernels with undervolt it should get better yet.
I'm using CM10 8/23 and my battery life is good.
One of the best I even made a snapshot (can't upload right now): 51% left after 12 hours 46 minutes.
That's why I'm in a dilemma between jelly bean and gingerbread. I do appreciate JB a lot, way better functions. But still the battery life and compatibility are big issues. I can get 2 days under gb but only less than 12 hours in JB, that's a big issue.
I have been getting great battery life with the latest JB ROMs I have been using. Pretty much on par with the GB ROMs I used.
Sent from my SGH-I997 using xda app-developers app
Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.
threi_ said:
Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.
Click to expand...
Click to collapse
did you try cm9?
qkster said:
did you try cm9?
Click to expand...
Click to collapse
Yup, it's all been the same since ICS, I absolutely cannot get acceptable battery life, no matter what i do.
threi_ said:
Yup, it's all been the same since ICS, I absolutely cannot get acceptable battery life, no matter what i do.
Click to expand...
Click to collapse
are you getting AOS drain while on wifi?
you may consider a factory reset and sdcard format
when you reinstall, decline all google locations and backup services.
qkster said:
are you getting AOS drain while on wifi?
you may consider a factory reset and sdcard format
when you reinstall, decline all google locations and backup services.
Click to expand...
Click to collapse
I have done a factory reset, i formatted my sd card not too long ago (I also suspected this)
I also make sure google locations is disabled, never keep backup enabled (i did once by mistake and the auto restore nearly killed all my monthly data)
I am going to toggle wifi tonight and set a marker in BBS, i'll check the drain overnight (I did this a while ago and it did improve standby drain somewhat, but I am going to try it again)
threi_ said:
Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.
Click to expand...
Click to collapse
i do notice battery drain in some areas. but not others. some people seem to think certain modems are effecting the cell standby drain, not sure myself. but there are many compatible modem.bins to try from att and t-mobile(t959v)
Just an update: wifi didn't help much.
threi_ said:
Just an update: wifi didn't help much.
Click to expand...
Click to collapse
I've been playing around a bit with different gb kernels, odex and deodex.
I found the drain issue much less on stock uclb3 kernel and rfs file system.
Almost all drain were associated with being on wifi...wakelocks and something else kills the battery.
If I have wifi off, there is usually not any issue.
You may have to play around a bit to see. My experience on cm9 and cm10 has been limited. I have noted several users noticing drain on cm9 and cm10 as well.
To avoid drain:
1. Use it to the max and constantly.
2. Leave the phone on airplane mode when not in use.
3. Turn off data (wifi and mobile data) and background data when not in use. I use this last mode.
Thanks for the tips man :good:
Airplane mode of course makes batt life better (disabling data doesn't), but when I start having to make sacrifices I didn't have to on GB it becomes a problem for me. Why should I jump through hoops and gimp my convenience for battery life that still isn't even as good as GB?
Instead of that i'd rather try to find the root cause of the problem. Doing so then allows us to help others that may have the same problem.
It definitely is an issue with the radio (or rather CM code overlooking something concerning the radio). What exactly, i'm not too sure. I've tried different modems as well, UCLB3 on JB was awful for battery life, UCKL2 and UXKG3 are slightly better but still not that great.
I don't want to complain about these things, I always try to research first, but damn....i'm stumped.
threi_ said:
Thanks for the tips man :good:
Instead of that i'd rather try to find the root cause of the problem. Doing so then allows us to help others that may have the same problem.
I don't want to complain about these things, I always try to research first, but damn....i'm stumped.
Click to expand...
Click to collapse
Yeah, I agree with you there. The techniques I use is pretty simple. Pose the hypothesis. Start with a full deck and slowly eliminate or start minimal and add.
ex: flash jb without gapps; without microSd. try different modem; try a different kernel. different kernel from different build.
have to use it for a few days to find out.
do the same for cm9.
add gapps...
add microsd
etc..
at some point, you will find out contributing factors.
There are a few battery thread that may be helpful if you havent looked:
http://forum.xda-developers.com/showthread.php?t=1408433&page=9
Ryo Misaki said:
Really? I got faaar better battery life on Scott's Paranoid Android ICS build than I EVER did for any Gingerbread rom...
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This is true, and you can save battery life w/ customization and now Scott is up to JB being one of the best battery life roms I've run
or just turn down your screen brightness