Related
I have done everything imaginable to improve battery life and my battery monitor shows that 93% of my battery is taken up by my screen. I always thought this was a good thing as it means my system isnt raping my battery.
Im using syndicate 1.2 and i have everything disabled drm/sns/sys update etc etc.
I just dont understand how my battery gets drained so quick. Honestly with regular usage (no games...just browsing and news) on a regular battery it maybe will last 6-7 hours. Doesn't really make alot of sense to me. Was hoping I could narrow down specifically what may be causing it.
Im using beautiful widgets (static location, switcher pro widget, calwidget and thats seriously it with launcher pro. I should be getting great battery life
try spare parts from the market.
hm good suggestion i didnt know it had that feature lol or i just havent opened the program in so long. I removed pandora/winamp/shazam widgets from my phone to see how that makes a difference.
quick question if you know...i know gps isnt supposed to use battery unless a program is accessing it but i hear people say to turn it off all the time. I have seek droid installed as well as lookout and I'd like to keep gps on but if its draining battery just by being 'on' without being used i'll leave it off.
Yeah, widgits will wipe out your battery. Especially if they are constantly updating....
Sent from my SPH-D700 using XDA Premium App
sceptor said:
quick question if you know...i know gps isnt supposed to use battery unless a program is accessing it but i hear people say to turn it off all the time. I have seek droid installed as well as lookout and I'd like to keep gps on but if its draining battery just by being 'on' without being used i'll leave it off.
Click to expand...
Click to collapse
Or, you can pay for Titanium Pro or Bloat Freezer And freeze apps that run even when not in use like Maps,Poweramp,Root Tools, there are lots that do that I bought Bloat Freezer and found out even Google+ runs when not in use. I had like 16 running unknown to me. Launcher Pro was and I use Zeam....
Sent from my SPH-D700 using XDA Premium App
I have launcher pro and I don't think I can get around its usage I just don't get how the programs are raping my battery while not being used. Like pandora or winamp widget shouldt be doing a single thing unless I click them. Same for shazam etc. I want to have access to them via widget but have them frozen if not being used
Sent from my SPH-D700 using XDA App
sceptor said:
I have launcher pro and I don't think I can get around its usage I just don't get how the programs are raping my battery while not being used. Like pandora or winamp widget shouldt be doing a single thing unless I click them. Same for shazam etc. I want to have access to them via widget but have them frozen if not being used
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
You can't have your cake and eat it too. The best thing I can recommend is to put app shortcuts on your home screen, you can afford 1 more tap but you can't magically add more battery.
Also turn down your screen brightness. The display is the biggest drain on your battery than anything else. I can literally watch the percentages click away while browsing or reading through XDA. Screen off I use about 1% an hour. Reading XDA I can drop from the 90's to the 70's in 20 minutes.
kennyglass123 said:
Also turn down your screen brightness. The display is the biggest drain on your battery than anything else. I can literally watch the percentages click away while browsing or reading through XDA. Screen off I use about 1% an hour. Reading XDA I can drop from the 90's to the 70's in 20 minutes.
Click to expand...
Click to collapse
Yup and XDA runs in the background when not in use..kind of disappointing. I use this app more than any other these days
Sent from my SPH-D700 using XDA Premium App
I've had CM7 on my t989 since the day after alpha 2 came out, and I've never had any serious issues I haven't been able to solve.
I've been trying to track down what's causeing my phone to stay awake, and I can't figure it out at all. In the android battery usage, it shows that my phone is almost always awake when it's sitting in my pocket with nothing running, even after a fresh reboot. No relevant application shows up in either the 'partial wake usage' list or the main android battery usage list.
Is there a way to get more accurate information about partial wake usage or per application usage then I'm aware of? I'm currently using Battery Monitor Widget to figure this stuff out.
I could be an application I have installed that is causing it, but how would it be ducking the android battery usage monitor AND the partial wake usage list?
Anyone else experience something like this?
If you go to Settings, About phone, Battery Usage, what are the top apps?
Liquid5n0w said:
I've had CM7 on my t989 since the day after alpha 2 came out, and I've never had any serious issues I haven't been able to solve.
I've been trying to track down what's causeing my phone to stay awake, and I can't figure it out at all. In the android battery usage, it shows that my phone is almost always awake when it's sitting in my pocket with nothing running, even after a fresh reboot. No relevant application shows up in either the 'partial wake usage' list or the main android battery usage list.
Is there a way to get more accurate information about partial wake usage or per application usage then I'm aware of? I'm currently using Battery Monitor Widget to figure this stuff out.
I could be an application I have installed that is causing it, but how would it be ducking the android battery usage monitor AND the partial wake usage list?
Anyone else experience something like this?
Click to expand...
Click to collapse
Try Better Battery Stats. It has really helped me increase my phone's deep sleep.
http://forum.xda-developers.com/showthread.php?t=1179809
germania said:
If you go to Settings, About phone, Battery Usage, what are the top apps?
Click to expand...
Click to collapse
There are apps there, but they aren't the ones that are draining my battery, considering none of them are the ones keeping my phone awake while the screen is off and it's idle.
There is battery usage going on that isn't listed on the battery usage page, which is why I made the thread.
orangejulio said:
Try Better Battery Stats. It has really helped me increase my phone's deep sleep.
http://forum.xda-developers.com/showthread.php?t=1179809
Click to expand...
Click to collapse
I've used better battery stats, it exposed the same information that battery monitor widget does, just in a much less user friendly way.
What ever is keeping the wake lock, my phone isn't tracking it, making me think it's something in the OS, not an app I have installed.
I'm willing to bet its something with calls/proximity sensors. Is Android system 2nd on battery usage behind display?
Sent from my SGH-T989 using Tapatalk
mikeyinid said:
I'm willing to bet its something with calls/proximity sensors. Is Android system 2nd on battery usage behind display?
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Yeah, android system is almost always second, is there anything I can do to help that besides switch back to a samsung rom?
Is this happening with other people on CM7 alpha with this phone?
Liquid5n0w said:
Yeah, android system is almost always second, is there anything I can do to help that besides switch back to a samsung rom?
Is this happening with other people on CM7 alpha with this phone?
Click to expand...
Click to collapse
It happens on a bunch of phones with cm7. Not just this one. There's really nothing you can do about it. Are you getting that bad of battery life?
Sent from my SGH-T989 using Tapatalk
Yeah, the battery life is really bad sometimes, but other times it's fine.
So no one knows the cause? It just happens? I'm confident CM9 will fix it, mostly because they have the ground up reword the ROM to make it work.
Liquid5n0w said:
Yeah, the battery life is really bad sometimes, but other times it's fine.
So no one knows the cause? It just happens? I'm confident CM9 will fix it, mostly because they have the ground up reword the ROM to make it work.
Click to expand...
Click to collapse
The times its good is when you don't make many calls? Or your calls or later in the day? What happens is after you make a call there is a partial wake lock triggered by the proximity sensor. Pay attention to that.
Sent from my SGH-T989 using Tapatalk
Thanks, does restarting after a call solve the partial wake lock?
Liquid5n0w said:
Thanks, does restarting after a call solve the partial wake lock?
Click to expand...
Click to collapse
yes, thats what i did sometimes on my evo. i also like to do a battery pull at night before putting my phone on the charger. kills any crazy processes
no battery issue but i can't make calls.
I have done pretty extensive testing in the last few days and this is what I found.
TOUCHWIZZ USERS ONLY, uninstall and delete data for the app my uploads. It syncs your gallery with picasa and uses a load ofdata and battery. It won't break anything. turn off instant upload in Google+. Turn off smart stay and motion actions. they use about every sensor in your phone. Turn off the wake up phrase in s-voice. If its on it is always listening for that phrase. I'll keep looking for other things but I got fairly good battery life just doing those things right there.
When uninstalling an app, wipe cache and data first. This will clear any background processes that could stay after the app is gone.
Install es task manager and kill everything you don't need to run on startup to preserve boot time/battery usage. Also it will keep the processors a lot lower.
All accelerometer and other hardware functions use a significant portion of your battery. If you don't use landscape mode turn auto rotate off because it uses that precious battery life.
Weather bar in notification drop down and on your lockscreen will destroy your battery life. Weather widgets also use quite a bit of battery.
Facebook app also kills your battery because its always connected to the internet. Syncing Facebook account to your phone further wears down your battery. Any game or other app that connects to facebook will also do the same.
Look in data usage under settings. Anything on that list uses more battery because its connected to the internet.
If your not in an lte area turn lte mode off because your device will be searching for a signal it will never get.
Low signal strength kills your battery because your phone has to use more energy to hold connection to the network. If you have WiFi at home and bad cell service (or anywhere) use WiFi because its easier it is for your phone to hold good wifi signal than bad cell signal. also turn off your NFC. It uses more battery than Bluetooth does.
Get better battery stats app and look for wake locks because without deep sleep you will never get more than 12 hours battery life.
Widgets, live wallpapers, lock screen ripples and other things that move use battery also. If you don't use it then remove it to save a couple percent a day.
Remember that when charging through a computer USB port or things like that charge a lot slower than an outlet. Slow charging is better than fast charging because your battery stays cooler and that means your batteries total life will be longer.
Finally before you go in a ROM thread and start complaining about battery life, go at least three charge cycles after flashing to optimize your battery.
There are many things that cause battery drain so beware when you download that next app. It could be a battery sucker. If you don't need or don't use an app. Uninstall it because it may have background processes that are using up battery and RAM.
This is a link to read about charging and discharging li-ion batteries.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Thank x10forevers for this great piece of literature. :thumbup:
Here is a link to how Att suggests you save battery!:thumbup:
http://insider.att.com/articles/kee...ExtndSource=1012_ipnp_nat_i_btry#.UJJiM6O3PFo
PM me if you have further questions or something for me to add to this OP.
Happy flashing everyone!!!
Sent from my SGH-I747 using xda premium
nice post! stock users will appreciate it
Hopefully this thread will help reduce the clutter of useless battery life shots in ROM threads. Good looking out!
Sent from my AOKP powered Samsung Galaxy S III
t3chn0s1s said:
Hopefully this thread will help reduce the clutter of useless battery life shots in ROM threads. Good looking out!
Sent from my AOKP powered Samsung Galaxy S III
Click to expand...
Click to collapse
Hit the thanks button. I want to see a list of everyone that actually uses this on the thanks area in my OP. And I'm glad you think this will help. I hope so.:thumbup:
Sent from my SGH-I747 using xda premium
flammingcamel said:
Hit the thanks button. I want to see a list of everyone that actually uses this on the thanks area in my OP. And I'm glad you think this will help. I hope so.:thumbup:
Sent from my SGH-I747 using xda premium
Click to expand...
Click to collapse
Done. My bad for neglecting to initially.
Sent from my AOKP powered Samsung Galaxy S III
Thanks. New to the s3
The other thing I might add is the "wake up phrase" where ever that is. I found it yesterday and turned it off. Helped a lot.
I think this is pretty good, what do you all think?
sent from TGFY aokp.
Fixing battery drain on your s3
rthomas10 said:
The other thing I might add is the "wake up phrase" where ever that is. I found it yesterday and turned it off. Helped a lot.
Click to expand...
Click to collapse
PM me about the "wake up phrase" haven't heard of it. Or just explain it here. I'll add it to the OP
Edit: I found it it's a touchwiz feature.
sent from TGFY aokp.
Fixing battery drain on your s3
Whats better for battery than the native Facebook ? Maybe turning off notifications will help
Sent from my SGH-I747 using xda premium
Sidneymac said:
Whats better for battery than the native Facebook ? Maybe turning off notifications will help
Sent from my SGH-I747 using xda premium
Click to expand...
Click to collapse
You can uninstall the facebook app, go to facebook on your browser, create a bookmark, and then place a widget on your homescreen for that bookmark. The site is actually faster than the app.
In my opinion maximizing battery life is all about watching out for the things on your phone that you don't care much about but are using a lot of battery life versus keeping the features you like that make your phone a smart phone.
I leave GPS on all the time, use auto brightness, have fb and fb messenger installed, use Google talk all the time, push my work email, etc. and accept the fact that this will cost me about 2% per hour when my phone is idle. I'm also using the latest ktoonsez kernel & task/kt jellybean rom and those help tremendously on battery life (1h45m since unplugging today, 51m of screen time and I'm at 89%). I have definitely been diligent about turning off the things I don't care about, like latitude, location in Facebook, rom weather, etc. and that helps quite a bit. My biggest problem has been maps running for no reason and draining lots of battery, but that sends to be a lot better with the latest rom and kernel.
Sent from my SGH-I747 using Tapatalk 2
Normal every day use going to school, bars and sleeping at nights etc lol
AOKP 10/16 + kt747 10/16
Sent from my SGH-I747
reflectingod96 said:
Normal every day use going to school, bars and sleeping at nights etc lol
AOKP 10/16 + kt747 10/16
Sent from my SGH-I747
Click to expand...
Click to collapse
That's pretty damn good I would say.
sent from TGFY aokp.
Fixing battery drain on your s3
Loving this s3. Last phone I had that had a battery this good was my lg xenon.
sent from TGFY aokp.
Fixing battery drain on your s3
Anyone know how to fix 1013 wakelock. Tried scanning and repairing damaged mp3s and converted my m4a files, but still have quite a bit of drain. Any help would be appreciated.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
QUOTE=guilhermebride;32470926]I know this topic is a little old, but I think someone else might find this information interesting:
software.intel.com/en-us/blogs/2012/03/30/battery-life-on-android-what-can-you-do
ii.Mediaserver. This system process is tricky when it comes to battery. What happens is that whenever you access any sort of media on your external SD card (playing music, gallery, what have you), this process kicks off. Luckily though (but hard to catch), sometimes, this process uses more process time than it should due to corrupted contents on your external SD card. In order to catch this culprit: try clearing your battery stats (for example, restarting your device or coming off AC power), playing some music and/or checking out pictures on your SD card for a few hours. Then, check your processes. If Mediaserver is high up there in usage, you may want to consider cleaning up your SD card. Naturally, we would expect that the process is higher when media contents are in use. I can’t give you a specific guideline such as, "something is up if Mediaserver consumes over 25% battery." This is another example of where you should look up other user stats for system processes based on your specific phone and OS version. If you think your SD card may be corrupted, backup your data, format the device, and slowly, add back files and repeating your media tests. Finding a corrupted file isn’t a guarantee, but this doesn’t hurt if you suspect data corruption.[/QUOTE]
sent from TGFY aokp.
Fixing battery drain on your s3
sent from TGFY aokp.
Fixing battery drain on your s3
JusFig said:
Anyone know how to fix 1013 wakelock. Tried scanning and repairing damaged mp3s and converted my m4a files, but still have quite a bit of drain. Any help would be appreciated.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
See this ^
sent from TGFY aokp.
Fixing battery drain on your s3
flammingcamel said:
Loving this s3. Last phone I had that had a battery this good was my lg xenon.
sent from TGFY aokp.
Fixing battery drain on your s3
Click to expand...
Click to collapse
what the hell howd you get it that good? I use aokp too and I am getting maybe 2 hours of screen time and maybe 17 hours ish?
enomi said:
what the hell howd you get it that good? I use aokp too and I am getting maybe 2 hours of screen time and maybe 17 hours ish?
Click to expand...
Click to collapse
Turn off GPS when not in need. Turn off WiFi when not near wifi. All the stuff in the op. And undervolted by 100+ mv on every CPU setting. And my phone is absolutely lag free accept when I hit the unlock button it takes like half a second for the screen to come on instead of instantly (160mv undervolted on 192 which is sleep speed I set)
sent from TGFY aokp.
Fixing battery drain on your s3
cloudyphiz said:
In my opinion maximizing battery life is all about watching out for the things on your phone that you don't care much about but are using a lot of battery life versus keeping the features you like that make your phone a smart phone.
I leave GPS on all the time, use auto brightness, have fb and fb messenger installed, use Google talk all the time, push my work email, etc. and accept the fact that this will cost me about 2% per hour when my phone is idle. I'm also using the latest ktoonsez kernel & task/kt jellybean rom and those help tremendously on battery life (1h45m since unplugging today, 51m of screen time and I'm at 89%). I have definitely been diligent about turning off the things I don't care about, like latitude, location in Facebook, rom weather, etc. and that helps quite a bit. My biggest problem has been maps running for no reason and draining lots of battery, but that sends to be a lot better with the latest rom and kernel.
Sent from my SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Maps is known for that. If you don't mind my asking what do you use maps for and could you just use Google now to search locations and it will even give you traffic n stuff. That would probably get you another hour or so a day.
sent from TGFY aokp.
Fixing battery drain on your s3
Hey guys, I was getting terrible battery life when the phone is idle. I looked into it to see what was going on. First off, I am on the stock rooted deodex'd ROM that scrosler posted. The biggest problem was an app I installed called Light Flow Lite, it controls your LED. It had over 6 hours of wakelock today. Removed it, not worth it at all.
The second thing I found that was interesting was after that, the phone STILL wasn't hitting deep sleep. I poked around in BetterBatteryStats and didn't find anything in there that would explain that. I then ran a "top" (in terminal or adb shell, type top -m 5 -t). Everything looked normal, nothing crazy. But I turned the screen off and let it run for a few seconds. I got a massive spike in CPU (anywhere from 15-35%) for system_server with the thread "WindowManagerPo" (which is likely short for WindowManagerPolicy).
I did some searching and it turns out that there is a bug with auto rotation that causes this. Essentially, the sensors don't stop looking for orientation change when the screen is off. I found reports of this in the Nexus S forums, GS3 forums, etc. This leads me to believe it is a Samsung kernel issue, since that's the least common denominator when it comes to the phones that had this issue. If you don't use auto rotation, you probably aren't encountering this issue (but keep reading for some good info below!) But I use auto rotation, how can I fix this?
Download an app called Auto Rotate Auto Lock. This app will turn off auto rotation when your screen turns off and enable it back when you turn the screen back on. This looks like this should really help to combat this bug and it handy for people like me who like auto rotation but don't want to have battery life suffer from something as stupid as this. I have verified that my phone now does enter Deep Sleep easily, and it hadn't hit that all day!
I also recommend an app called CPU Spy Plus (XDA thread). This app shows some very valuable information about your processor. You never want to see "Deep Sleep" under Unused CPU States as this means your phone isn't sleeping and is wasting battery!
It would also be good to download BetterBatteryStats (XDA Thread). This will help you nail down battery drain that you won't see in the stock Battery graph found in Settings. Things or importance are Partial Wakelocks and Alarms.
Monitoring these apps can really help you to increase your battery life on your phone. If anyone else is having bad battery life when idle, please try this out. I'm sure this will help you Feel free to ask questions, I will try to answer them as best as I can!
I have autorotation turned on but not the face orientation sensing. I haven't noticed a significant battery loss, at 19 hours with 10 left according to battery spy, but I'll give this a try and see if it increases it any.
i'll give it a shot. i was wondering how at work it would drain 2-4% an hour but at home with a crappy signal i'd only lose 6% all night.
at work it's in my pocket and at home it's stationary.
madsquabbles said:
i'll give it a shot. i was wondering how at work it would drain 2-4% an hour but at home with a crappy signal i'd only lose 6% all night.
at work it's in my pocket and at home it's stationary.
Click to expand...
Click to collapse
I have noticed Google Talk drains batteries when your signed in. By default your phone will sign in. If you don't use TALK, sign-out of the app and you will see increased battery life. Your wont ping the internet as much which saves batteries.
Thanks viperboy I took your suggestion and so far it seems to be helping.
I haven't tried that app yet, however I have definitely noticed an improvement in battery life by disabling auto rotation. Thanks for the info.
THIS NOTE 2 IS SENT FROM A GALAXY WHERE SAMSUNG SPRINTS TO THE TOP, AND JELLY BEANS EAT APPLES!!!!
after a bit of troubleshooting i found that battery monitor widget pro was the cause of my drain. after removing it i went from 2 to 3% an hour to 3% overnight. this really sucks as i love the info bmw colleects. this is the only device i have that suffers drain from the app.
Thanks for the info. I have been losing % 15 battery every night while I'm asleep and was wondering why
...from a Galaxy Note II
-viperboy- said:
Hey guys, I was getting terrible battery life when the phone is idle. I looked into it to see what was going on. First off, I am on the stock rooted deodex'd ROM that scrosler posted. The biggest problem was an app I installed called Light Flow Lite, it controls your LED. It had over 6 hours of wakelock today. Removed it, not worth it at all.
The second thing I found that was interesting was after that, the phone STILL wasn't hitting deep sleep. I poked around in BetterBatteryStats and didn't find anything in there that would explain that. I then ran a "top" (in terminal or adb shell, type top -m 5 -t). Everything looked normal, nothing crazy. But I turned the screen off and let it run for a few seconds. I got a massive spike in CPU (anywhere from 15-35%) for system_server with the thread "WindowManagerPo" (which is likely short for WindowManagerPolicy).
I did some searching and it turns out that there is a bug with auto rotation that causes this. Essentially, the sensors don't stop looking for orientation change when the screen is off. I found reports of this in the Nexus S forums, GS3 forums, etc. This leads me to believe it is a Samsung kernel issue, since that's the least common denominator when it comes to the phones that had this issue. If you don't use auto rotation, you probably aren't encountering this issue (but keep reading for some good info below!) But I use auto rotation, how can I fix this?
Download an app called Auto Rotate Auto Lock. This app will turn off auto rotation when your screen turns off and enable it back when you turn the screen back on. This looks like this should really help to combat this bug and it handy for people like me who like auto rotation but don't want to have battery life suffer from something as stupid as this. I have verified that my phone now does enter Deep Sleep easily, and it hadn't hit that all day!
I also recommend an app called CPU Spy Plus (XDA thread). This app shows some very valuable information about your processor. You never want to see "Deep Sleep" under Unused CPU States as this means your phone isn't sleeping and is wasting battery!
It would also be good to download BetterBatteryStats (XDA Thread). This will help you nail down battery drain that you won't see in the stock Battery graph found in Settings. Things or importance are Partial Wakelocks and Alarms.
Monitoring these apps can really help you to increase your battery life on your phone. If anyone else is having bad battery life when idle, please try this out. I'm sure this will help you Feel free to ask questions, I will try to answer them as best as I can!
Click to expand...
Click to collapse
Thanks for the suggestions. I have heard so much about the great battery life, but that has not been my experience. I had a Note 1 and I had no problems. With Note 2, the battery drains to about 1/4 after about 7 hours with limited use. I have turned off auto rotation, lowered the screen brightness, changed auto check settings for email, and don't see much difference. In addition, it seems a shame that I should have to figure out ways to use fewer functions to make battery last for phone calls, since I never had to do that before. Any ideas?
Thank you for this info. I consistently get a full days charge of of my phone but was pretty clueless when it came to what was draining my battery. I've used the rotation lock app and will report my results to see if I get even more remaining battery each day.
Sent from my SPH-L900 using xda app-developers app
Thanks for the helpful advice Viperboy! I've definitely been having wake lock issues with my phone. Hopefully these apps will help me eliminate the problems.
kat3k said:
Thanks for the suggestions. I have heard so much about the great battery life, but that has not been my experience. I had a Note 1 and I had no problems. With Note 2, the battery drains to about 1/4 after about 7 hours with limited use. I have turned off auto rotation, lowered the screen brightness, changed auto check settings for email, and don't see much difference. In addition, it seems a shame that I should have to figure out ways to use fewer functions to make battery last for phone calls, since I never had to do that before. Any ideas?
Click to expand...
Click to collapse
As viperboy mentioned, BetterBatteryStats is your friend. It really will help you figure out why your phone isn't sleeping like it should. It definitely takes some time to monitor and figure out what the readings mean to help point you to the apps or settings that're affecting your battery, but well worth it. I also like having a better understanding of how things work on my phone.
i did a double check on battery monitor widget pro and it started draining my phone again. as soon as i uninstalled it everything was fine again. this is with both cleanrom and blazer. i'll just wait til official support comes and try it again.
-viperboy- said:
Hey guys, I was getting terrible battery life when the phone is idle. I looked into it to see what was going on. First off, I am on the stock rooted deodex'd ROM that scrosler posted. The biggest problem was an app I installed called Light Flow Lite, it controls your LED. It had over 6 hours of wakelock today. Removed it, not worth it at all.
The second thing I found that was interesting was after that, the phone STILL wasn't hitting deep sleep. I poked around in BetterBatteryStats and didn't find anything in there that would explain that. I then ran a "top" (in terminal or adb shell, type top -m 5 -t). Everything looked normal, nothing crazy. But I turned the screen off and let it run for a few seconds. I got a massive spike in CPU (anywhere from 15-35%) for system_server with the thread "WindowManagerPo" (which is likely short for WindowManagerPolicy).
I did some searching and it turns out that there is a bug with auto rotation that causes this. Essentially, the sensors don't stop looking for orientation change when the screen is off. I found reports of this in the Nexus S forums, GS3 forums, etc. This leads me to believe it is a Samsung kernel issue, since that's the least common denominator when it comes to the phones that had this issue. If you don't use auto rotation, you probably aren't encountering this issue (but keep reading for some good info below!) But I use auto rotation, how can I fix this?
Download an app called Auto Rotate Auto Lock. This app will turn off auto rotation when your screen turns off and enable it back when you turn the screen back on. This looks like this should really help to combat this bug and it handy for people like me who like auto rotation but don't want to have battery life suffer from something as stupid as this. I have verified that my phone now does enter Deep Sleep easily, and it hadn't hit that all day!
I also recommend an app called CPU Spy Plus (XDA thread). This app shows some very valuable information about your processor. You never want to see "Deep Sleep" under Unused CPU States as this means your phone isn't sleeping and is wasting battery!
It would also be good to download BetterBatteryStats (XDA Thread). This will help you nail down battery drain that you won't see in the stock Battery graph found in Settings. Things or importance are Partial Wakelocks and Alarms.
Monitoring these apps can really help you to increase your battery life on your phone. If anyone else is having bad battery life when idle, please try this out. I'm sure this will help you Feel free to ask questions, I will try to answer them as best as I can!
Click to expand...
Click to collapse
Have you tried the Perseus kernel? I hear the battery life is improved with it. So may be it doesn't have the rotate issue.
I've been using cpu sleeper and I easily get about 30 hours. Looks like the new apk fixed quad core. So when the phone is off it only uses one core and shuts down the other three and lights them back up when you need them.
Sent from my SPH-L900 using xda premium
ZenInsight said:
Have you tried the Perseus kernel? I hear the battery life is improved with it. So may be it doesn't have the rotate issue.
Click to expand...
Click to collapse
I'm on it now, but I haven't looked to see if it fixed the auto rotation bug yet,
rudyrude432 said:
I've been using cpu sleeper and I easily get about 30 hours. Looks like the new apk fixed quad core. So when the phone is off it only uses one core and shuts down the other three and lights them back up when you need them.
Sent from my SPH-L900 using xda premium
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That app is unnecessary. Pegasusq governor already does that by default. Goes to 1 core and 200mhz when screen off, at least that's how my Note 10.1 was. I assume it is the same here since the International GS3, GN 10.1, and GNII basically share the same kernel with a few minor differences.
I think I may try the perseus kernel today to see if it improves battery.. I haven't heard it does.. I just been seeing people do that benchmark stuff with it
-TeaM VeNuM Like A Boss
Interesting... I have a script that reports on CPU freq and, when plugged into USB (maybe the wall charger too, didn't check), it appears that the kernel runs cpu0 and cpu3 all the time, even when screen off. With the phone unplugged, it went to using only cpu0 but didn't cap the freq. It was spending a good amount of time at the higher frequencies even though I had nothing running.
MiguelHogue said:
I think I may try the perseus kernel today to see if it improves battery.. I haven't heard it does.. I just been seeing people do that benchmark stuff with it
-TeaM VeNuM Like A Boss
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http://forum.xda-developers.com/showthread.php?t=1959898&page=5
Post #42
I installed the app to turn the rotation off when the screen is off so far everything good but when I get a call this goes crazy because the screen goes while in call. I know this because I have an smartwatch which it has a notification app and every message that the phone has my watch vibrates with that message and I had a call few minutes ago my watch started vibrating non stop until I hang up.
Sent from my SPH-L900 using Tapatalk 2
Yesterday, I unplugged my phone at 11am. It was fully charged. We went to lunch. I shared one picture on Instagram. We got in the car. I turned on a playlist of podcasts in BeyondPod and listened to podcasts for a 2.5 hour drive. When I got there, my battery was at 25%.
Any ideas? What other info can I give you to help get this figured out?
Edit: I obviously don't know how to attach images, so if someone could tell me how to make the thumbnails bigger, I can fix that.
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turn off 4g
Zepius said:
turn off 4g
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(Your signature threw me off. "I didn't ask about the best ROM or Kernel..." )
That's the first thing I did once I recharged the phone last night. I feel like I read somewhere that turning off 4G still keeps the 4G radio active or something like that. Am I just misremembering that? I'm fine going without 4G if that will save my battery. Do you think that will be enough to do the trick?
zipzoomeroo said:
(Your signature threw me off. "I didn't ask about the best ROM or Kernel..." )
That's the first thing I did once I recharged the phone last night. I feel like I read somewhere that turning off 4G still keeps the 4G radio active or something like that. Am I just misremembering that? I'm fine going without 4G if that will save my battery. Do you think that will be enough to do the trick?
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Never heard that before. Turning off the 4G radio and selecting cdma/evdo auto should give you a lot better battery life. I'd also suggest the extended battery. That's what I'm hoping Santa brings me. If you turn off GPS that will help too.
Sent from my Galaxy Nexus using xda app-developers app
zipzoomeroo said:
Yesterday, I unplugged my phone at 11am. It was fully charged. We went to lunch. I shared one picture on Instagram. We got in the car. I turned on a playlist of podcasts in BeyondPod and listened to podcasts for a 2.5 hour drive. When I got there, my battery was at 25%.
Any ideas? What other info can I give you to help get this figured out?
Edit: I obviously don't know how to attach images, so if someone could tell me how to make the thumbnails bigger, I can fix that.
View attachment 1549919
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There's a few basics that every android owner should know.....first screen brightness....screen brightness is usually the biggest culprit of stealing battery power.....now my suggestion would be to leave it at a constant level and NOT on automatic.....if you keep walking in and out or driving in and out of different areas of brightness the auto brightness is CONSTANTLY trying to compensate for this and working double time....leave it at a constant low brightness.....also inverted GApps help with the screen and power consumption as well because a darker screen is easier to portray than light colored screen.....I would flash baked inverted GApps, if you don't want to use them use a dark wallpaper (not a live wallpaper BC they use a lot of power). And also use www.bgoog.com as your home page its an inverted Google home page so its a black background instead of white.....also keep your phone on a CONSTANT network I.E. all 4G all 3G or all WiFi because if your phone is constantly searching for a signal this will drain your battery like no ones business......so to recap....use dark GApps a dark wallpaper (not live) and try using bgoog.com as your home page....And keep your phone on a constant signal no matter where you are so its not constantly searching for a better signal (which it will do even with screen off).....good luck these definitely helped my GNex battery life and if I've helped hit that thanks button over on the left.
Biverson said:
Never heard that before. Turning off the 4G radio and selecting cdma/evdo auto should give you a lot better battery life. I'd also suggest the extended battery. That's what I'm hoping Santa brings me. If you turn off GPS that will help too.
Sent from my Galaxy Nexus using xda app-developers app
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Good. Hoping that helps. I actually have the 3500 mAh extended battery and it barely adds an extra hour when I use it. Not sure if there's some way I need to calibrate it or something. I don't bother using it anymore because it adds so little battery life that I don't want the bulk. I feel like I must have gotten a bad battery or something.
Well, just wanted to report back. Feeling very good about today. Turned off 4G and set brightness to almost as low as it can go (without making me feel like I no longer have a sweet screen).
Compare today to yesterday:
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Glad it's better. I have mine on auto brightness and it works fine, if you don't like to always have it so low.
Sent from my Galaxy Nexus using xda app-developers app
From looking at your screenshots in the original post it was definitely the GPS running for a long time that ate up your battery.
Maybe an app that didn't exit correctly and the GPS kept running.
Your second screenshot confirms it, the GPS was only running sporadically, so your battery life is much better.