With the recent ek02 release and the battery improvements that came with it, I'm actually having trouble draining the phone fully (for calibration).
What is the quickest way to run the battery down you know of? Games are allowed too, I've got lots of new ones from the 10c sale.
Transmission sent from my Galaxy S II with XDA Premium
YouTube, netflix, tethering or gaming.
[Insert witty signature here]
Turn brightness all the way up. Play angry birds or ashpault for about two or three hours. That should do it for ya.
Sent from a Blazed SGS II
white background or really light. The brighter the background the more of the screen has to light up
i basically run every app i have in the background, set timeout to never, brightness to max, turn on all the toggles, play music on max volume, and run brightest flashlight free from the market, which you can set to have both the LEDs for the camera on and the screen at max brightness on a white screen, but im not too sure thats good for the phone.
for battery calibration i thought you have to run the battery down from normal use so the phone has an accurate reading of your battery stats (what gets wiped when you calibrate, which is BEFORE you run the battery down). if i have it all wrong someone please correct me, there are so many theories running around about "proper" battery calibrating
Cracked lite app will drain my battery even when it is plugged in
Sent from my SPH-D710 using xda premium
Words with Friends, for sure - takes about an hour to drain.
I do the flashlight trick. (White screen 100% brightness) Added bonus it will clear the screen of any minor burn in.
There's an app called fast discharge on the market that discharges your phone fast.
Sent from my SPH-D710 using xda premium
Let my wife & her mother have a conversation on it...
download all the pr0n!
Related
Does this app help battery life at all..
Sent from my PC36100 using XDA Premium App
No.
Sent From My HTC Evo 4G Using Tapatalk On The Now Network From Sprint.
No doesn't seem to, just dimes the screen but its still killing my battery but I'm still loving these speedy ports.
Sent from my PC36100 using XDA App
I was playing with the "screen filter" thing yesterday, because of Really Wanting to run the Avalaunch ROM, and I have the screen that gives the brightness issue. But it seemed to me that it did not technically dim the screen at all, just the image displayed, if that makes sense. Example being that it dimmed everything but the notification bar at top.
Some people are swearing by JuiceDefenderBeta for good results.
Ok... i didnt think so... evoking replied to a comment i left with that apk to fix the brightness issue on his speedy port...
But my concern with brightness was with the battery consumption.
So i used it...but it still destroyed battery life..
Sent from my PC36100 using XDA Premium App
kingdazy said:
I was playing with the "screen filter" thing yesterday, because of Really Wanting to run the Avalaunch ROM, and I have the screen that gives the brightness issue. But it seemed to me that it did not technically dim the screen at all, just the image displayed, if that makes sense. Example being that it dimmed everything but the notification bar at top.
Some people are swearing by JuiceDefenderBeta for good results.
Click to expand...
Click to collapse
No BS, I got 14 hours of medium-heavy usage including running a 4G hotstpot for about 30 mins, an about an hour of browsing over WIFI, a couple phone calls and numerous sms and email messages using JD beta with the Ultimate upgrade. I disabled JD the following day and got 9 hours with LESS usage (I was in training that day so no playing with the phone) I using CM7.0.3.1 with Tiamat 3.3.8.
Hi,
I have use my phone 30min and idle
6h05 and I lost 35% of battery...
Is it normal or I have a problem?
Thx
Sent from my Galaxy Nexus using XDA
You probably have a rouge app. Download "Where's my Droid power" and it will tell you which app is keeping the phone awake and close it.
Sent from my Galaxy Nexus using xda premium
My day :
12h11 12% :
1h28 display : 48%
10h43 idle : 12%
...
I install Where My droid Power :
IU Systeme : 3,48%
Swiftkey : 3,1%
LightFlow : 1,49%
Phone : 1,28%
...
Thx
Sent from my Transformer TF101 using xda premium
The native ICS app has some battery statistics. Go to settings-battery and it gives you some indication of what is being used.
Mine almost exclusively says most is from screen.
You might consider some application killing software through the play store.
Sent from my Galaxy Nexus using XDA
wparkins said:
The native ICS app has some battery statistics. Go to settings-battery and it gives you some indication of what is being used.
Mine almost exclusively says most is from screen.
You might consider some application killing software through the play store.
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
Don't use those, please.
It ruins the stability of said apps.
And...
I find the most useful feature of the stock android battery stats to be the graph.
Settings>battery>click the graph.
If you're "Screen On" and "Awake" bars are close to being the same...it's good.
If awake is on really frequently with your screen off...it's bad.
Keep in mind that playing music and making phone calls will keep your phone awake with the screen off. That's fine.
Jubakuba said:
Don't use those, please.
It ruins the stability of said apps.
And...
I find the most useful feature of the stock android battery stats to be the graph.
Settings>battery>click the graph.
If you're "Screen On" and "Awake" bars are close to being the same...it's good.
If awake is on really frequently with your screen off...it's bad.
Keep in mind that playing music and making phone calls will keep your phone awake with the screen off. That's fine.
Click to expand...
Click to collapse
I don't understand so I post screen, bad or Good?
Sent from my Galaxy Nexus using XDA
Jubakuba said:
Don't use those, please.
It ruins the stability of said apps.
And...
I find the most useful feature of the stock android battery stats to be the graph.
Settings>battery>click the graph.
Click to expand...
Click to collapse
I couldn't agree more on the battery and data usage graphs.
Thanks for the tip on app killing software, it seems all kinda of places have recommended them even though I never used one yet.
Plz help me
Franco.kernel r43 with AOKP b34
Default voltage, governor interactive. Fréquence 350/1000
Thx
Sent from my Galaxy Nexus using XDA
Some quick things that could save you some battery:
- dissable 4g when you are not using it if you have a gsm hit 2g networks only..
- Turn bluetooth and GPS on when you need them power them off when you are not using them. there's a nice widget you can add to your homescren to keep those settings in check.
- if you are a chatter. install chat apps that use Push. a nice example:
a) msn, facebook chat: Trillian
My phone lasts for something like 20 hours (on normal use) but I recharge it every night.. (when I go to sleep I plug it in). If you are a heavy user you can consider buying a better battery, or keeping a small solar powered powerbank in your bag..
amonfog said:
My phone lasts for something like 20 hours (on normal use) but I recharge it every night.. (when I go to sleep I plug it in). If you are a heavy user you can consider buying a better battery, or keeping a small solar powered powerbank in your bag..
Click to expand...
Click to collapse
Could you please explain "normal use" to me, because 20 hours battery life is something I haven't seen since a blackberry.
amonfog said:
Some quick things that could save you some battery:
- dissable 4g when you are not using it if you have a gsm hit 2g networks only..
- Turn bluetooth and GPS on when you need them power them off when you are not using them. there's a nice widget you can add to your homescren to keep those settings in check.
- if you are a chatter. install chat apps that use Push. a nice example:
a) msn, facebook chat: Trillian
My phone lasts for something like 20 hours (on normal use) but I recharge it every night.. (when I go to sleep I plug it in). If you are a heavy user you can consider buying a better battery, or keeping a small solar powered powerbank in your bag..
Click to expand...
Click to collapse
Thanks but
No bt, no gps, no chat
I try 2g only so
Sent from my Galaxy Nexus using XDA
I think I find solution
Switch 2G when display off
Stop Wifi when display off
60% and 8h30 use... (with much lost this morning without this config )
Confirm tomorrow
Sent from my Transformer TF101 using xda premium
What's a good figure for battery life on the GS3? The best I've got is about 31 hours using on demand and bfq. Any one got better life using other settings? I heard someone getting about 43 hours life but that seemed to be a little unbelievable. Let me know what your getting
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
What you reported is definitely "the average". Most actually only get a day, if they're lucky of moderate use and have to plug in before sleep every evening and get going on charge in morning. So its more like 15 hours actually. And your 31 max is very common high end for people who've stretched it out.
I'm not sure if you're stock rom or not and if rooted either but that makes a big difference.
I'm rooted ( and would ALWAYS RECOMMEND ROOT FOR EVERYONE EVEN UF NOT FLASHING ANY ROMS AND STAYING ON STOCK. The ability to have full control is important.
Changing kernels and more importantly, undervolting, will give you that longer life you're looking for.
I'm currently on KyanROM with either Ktoonez or Faux kernel (heavily tweaking and testing both) and have this phone beautifully undervolted to exceptionally low and very stable mv numbers! Thus getting me that lovely 36-45hour average (you mentioned you saw posted elsewhere - yes it is possible and many are doing it). I basically only need to plug in every OTHER EVENING or night between 6pm and midnight depending on usage and I'm a moderate to heavy user (with a lovely 3-5 hours of screen time as well) AND I also have my phone overclocked to 1.8Ghz! Surprisingly, the oc doesn't make much battery life impact at all because the phone isn't constantly having to run at high levels, only in short spurts. Actually, due to rooting and kernel change I'm able to have my phone run as low as 192Mhz during much of its general activity and deep sleep ( which I get a ton of as my phone basically always goes into it when the screen goes off). This saves me A LOT of battery life.
I also use LTE, which is actually one of the biggest if not the largest battery hog, next to screen time of course. But with that being said I only use it when needed and have it turned off when not in use.
As for my peak I was able to squeeeeeze out 87 hours once, on my stock battery BUT that was with some abnormal(for me) measures that really help conservation. Ie, no LTE, under clocked to 1.2Ghz for good part of the three days, much less then normal screen time over the period of which I used it at lowest level with even further reduction via screen filter, I actually used airplane mode during my three overnight sleeps (which I seldom use but if you can hack it, do it! It can really save battery overnight. My current setup basically SIPS MY BATTERY AT 1% EVERY 3.5-4 HOURS OVERNIGHT WHEN IN AIRPLANE MODE), mobile data was off for most of time but did use my wifi at normal level (wifi uses less especially if good signal with few reconnects/scans), used my typical low UV numbers, kept my notification updates/syncs/wakelocks to a minimum and lastly kept my memory virtually clear if unnecessary background apps.
Doing ALL of this allowed me to get OVER THREE DAYS BATTERY LIFE. But keep in mind I seldom do many of these battery saving tips on a regular basis but some do and if you can, they WILL work to extend your life substantially!
To wrap up (this long winded post/reply) I'll give you my general UV mv range numbers and the typical everyday simple battery saving methods I use.
1.My voltage at lowest clock of 192mhz=800mv with gradual (smooth and almost linear curve) increase up to a mere 1200mv at a whopping 1.890Ghz clock.
I use NOOP scheduler with ONDEMAND governor most of the time, sometimes SmartassV2.
My screen off and deep sleep use this lowest 192 clock speed and with no wakeup lag.
2. I use my screen at 0% brightness most of the time (except when outside or in high lighting environment). I use the brighrness widget app to control this as it is easier and works better then stock settings. I actually even further reduce my brightness with Scree Filter App. That app is awesome and often use it solely for brightness control because it has full control and can dim it to basically full black if wanted. Which is MUXH lower then stock control. Fyi I use my phone a LOT more at night or in dark environment thus allowing me to dim screen HEAVILY yet it still is actually plenty bright with ample contrast in dark environments to do everything. This saves on my battery HUGE!
3. I use LTE when needed and GSM/HSPA+ when not. Seldom turn of mobile data altogether. I do turn off wifi when out and only using mobile data.
4. I use Screebl app to have screen turn off when not in use. Its great liitle app. Basically let's you turn down screen timeout to 15 seconds or less so screen is never unnecessarily on but it always stays on when in use due to the accelerometer and it knows when the screen is not flat on table! Its very annoying when browsing or doing stuff where screen isn't touched for long periods and the screen goes to sleep! But this stops that! So its always on when upright or in use and when phone down it turns off immediately.
5. Very important step and can take some time and research but making sure to keep partial wakelocks and apps keeping device awake to a bare minimum! DEEP SLEEP IS VERY IMPORTANT TO SAVE BATTERY! You basically want it to go into that every time your screen goes off and to stay in it uninterrupted for as long as possible. And many users phones are NOT making it into deep sleep due to partial wakelocks and they don't even know it or how to fix it. Not getting deep sleep can unnecessarily kill your battery!
I use a few tools here: Better Battery Stats/GSAM Battery Monitor/Battery Monitor Widget from within System Tuner Pro (which is my also my main and highly recommended tuner app for CPU oc/uc and UV,etc.).
These apps really help to determine what, if any, apps are causing partial wakelocks ( displaying in wake number amounts and overall wake time) allowing you to determine what to do to fix the problem and let the phone gets as much battery saving deep sleep as possible.
6.I'm not big on auto app killers and actually recommend against them as Android ICS does this already very effectively but do keep in mind that the more active background memory that is used, the more battery the battery is drained. So I personally kill unnecessary apps myself from the background whenever possible to save a little battery here and there. Using the apps listed above in #5 can really help to detect a nasty background app or service that is quite possibly unknowingly using a ton of CPU and/or memory, thus draining more battery and also often just slowing down your phone!
7. For those who can use it Airplane Mode is a big saver! Try overnights if wanted as long as missing notifications, emails, calls, updates, etc is alright for you. I seldom use it but it does help.
8. I almost never use my Bluetooth and GPS but when I do that is the ONLY time they are on. They get turned off immediately and really be careful with the GPS in particular because you might be surprised how many things on your phone will use it in the background, sucking your battery!
9. Be careful with sound and vibration levels. Haptic feedback too. I don't do much here but its anotherctip nonetheless.
10. Lastly is treating and charging your battery right! I found an amazing site linked down below in a couple of articles that really explains these batteries and how they work in a very in depth technical level this is still not too hard to follow. Aside from the two links I posted check out the others on the left menu as there is a ton of useful and educational info!
http://batteryuniversity.com/learn/article/how_to_increase_the_runtime_of_your_wireless_device
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
OK I've rambled on waaay too long here. Maybe I'll take this and post a battery savings tips thread with it lol. "10 points"!
Btw I've just received both my 3300mAh and 4400mAh capacity batteries. So I have much testing to do on those too and I plan on reporting back on them as well. Also with screenshots for data and proof...I can and will also post screenshots for all of the numbers and stats I've posted here today with my personal phone/battery accomplishments.
Hope this helps some of you out there because yes this phone can be known for terrible battery life but it CAN be tweaked to SUBSTANTIALLY IMPROVE that life to high standards and keep up with the best of them!
Sent from my SGH-I747M using xda premium
On Stock battery - Kyan Rom/Ktoonez kernel (at this moment)
Seems about right. My phone is completely stock and if I really wanted to I could even use it for 2 work days. I usually charge it over night though. I used it for 2 days though while at work, and with 3 hours of screen on time I was down to 7% battery. Around 40 hours on.
I was stocked rooted using Sammy kernel. On demand BFQ. I'll try on demand noop and see if that helps. My screen was about 35% brightness.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Can I hijack a little here? My battery seems to be atrocious. It was okay stock after my first 3 full charges I was getting about 12 hours and 2.5 screen time.
Here is what I've done with my phone since:
Flashed to debloated stock Rom
disabled remaining unneeded apps (example ATT wifi app)
disabled Wifi
disabled bluetooth
disabled GPS
disabled GPS autorun states
disabled 4g
disabled autobrightness, set to 15%
disabled location reporting
disabled Push email with Exchange
disabled Motion
disabled auto google backup
disabled keytones and vibrate on all button presses
disabled touch key lights
disabled Svoice
disabled streaming on googleplay, only plays from memory card
disabled Google Now
fixed the cell standby bug (even though it may not impact battery figured wth)
Uninstalled FB
Set all Autosync accounts and email to sync only once per day
No widgets (only Google play music, Smemo note, flashlight, and folders)
Running save power mode for low power screen, no haptic, and auto adjust screen to blacks
Running mostly black wallpaper, No live wallpaper.
Running medium intensity vibration
I ran battery stats and got a lot of wakelocks from googlemaps and exchange so I disabled the push email and set it to once a day. Google maps I disabled latitude, and shut down the autostarts with gemini.
It's getting to the point where the phone is basically a dumbphone just so the battery can make it while it sits next to me at work. Today I have 48% after 8 hours and 50 minute screen time and 20 minutes of google play (only playing from on SD card not streaming).
Any ideas? It seems like I'm getting less than average.
All I did was also flash debloated rooted stock. Set to top out at 1.5ghz power save on. On demand BFQ schedule. Screen brightness as low as I can to still read. And got 32ish hours. I'm going to try OnDemand and noop like the other guy said and UV a lot more and see how close to 40 hours I can get
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
chrisj22 said:
All I did was also flash debloated rooted stock. Set to top out at 1.5ghz power save on. On demand BFQ schedule. Screen brightness as low as I can to still read. And got 32ish hours. I'm going to try OnDemand and noop like the other guy said and UV a lot more and see how close to 40 hours I can get
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Can u link me on the bfq? Having troublefinding what that is.
Also, is that the built in power save that limits the processor or some other software?
I believe if you flash Sammy kernel it has bfq. I am on task's CM10 and kernel and battery life seems poor compared to CM9 or stock rooted
Sent from my SGH-I747 using xda app-developers app
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
Is this the kind of battery life I should be expecting? Completely stock and running Juice Defender. Thanks!
It looks like you need to apply the "Cell standby" fix. That won't help your actual battery life, but it will help your reporting.
Everyone is going to be different depending on usage and signal strength.
Your battery usage isn't that bad, but when I was running ICS I would be able to get over 3 hours screen time and someimtes 20-24 hours total life.
It really varies based on your data usage. To extend battery life, then turn off unused data connections. Adjust your sync frequency, and limit push notifications. Network data coverage also impacts battery life, so in areas that have bad coverage, your phone is going to be searching for signal more often.
Use CPUspy as well and see if you phone is going to Deep Sleep when it should.
Here's a screen shot of CPUspy. Hope this helps!
Sent from my SGH-T999 using xda app-developers app
anthony42992 said:
Here's a screen shot of CPUspy. Hope this helps!
Sent from my SGH-T999 using xda app-developers app
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Your phone is not going into Deep Sleep as it should which is causing the higher drain you're seeing. Post what is using battery stats. Also, try to reboot. You said you were stock, so it could just be a random program that didn't close and is running in the background.
I would check your sync settings too.
Check this tread for other ideas:
http://forum.xda-developers.com/showthread.php?t=1969741
pytyper483 said:
Your phone is not going into Deep Sleep as it should which is causing the higher drain you're seeing. Post what is using battery stats. Also, try to reboot. You said you were stock, so it could just be a random program that didn't close and is running in the background.
I would check your sync settings too.
Check this tread for other ideas:
http://forum.xda-developers.com/showthread.php?t=1969741
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Click to collapse
Should I post a screen shot of partial wakelocks or kernel wakelocks? Thanks!
Sent from my SGH-T999 using xda app-developers app
Yes please do.
You have a rogue app that is prevention your cpu from sleeping.
What gives?
Sent from my SGH-T999 using xda app-developers app
If your screen on time is not around 4+ hours then you most probably are not getting good battery life.
Post a screen shot from betterbattery with Processes and Since Unplugged as your parameters. Wakelocks are not the problem. You have an app constantly running that will prevent DS, so a Wakelock is irrelavent at this point.
Woodrube said:
Post a screen shot from betterbattery with Processes and Since Unplugged as your parameters. Wakelocks are not the problem. You have an app constantly running that will prevent DS, so a Wakelock is irrelavent at this point.
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I did a restart recently so this is all I could get. Let me know if this helps or if you want one since unplugged.
Sent from my SGH-T999 using xda app-developers app
Ya no dice on that one. Just charge it up and run it for a few hours and then pull a screenie of Processes and Since Unplugged. I wanna set what it shows for your Android System as that is your main culprit.
Some things right off that I see with this last screen shot. First, I don't think that your JuiceDefender is working properly. Usually there is a Red, Green or Blue dot in the upper right corner of the shield. This is an indicator of your radio state. Second, that Revamped Nexus S live wallpaper will munch your battery. It's cool and I own it too, but it does cause some issues with battery, not neccessarily wakelocks though. Third, that Battery Monitoring widget is eating it up too. Not sure if the icon on the top-left is for that or not, but if it is in the notification area, then it is polling and is not caching causing drainage.
Those are just what I am seeing from this last screen. I am more interested in the Processes/Since Unplugged screen shot. Charge up and go get some lunch/dinner (depending on where you are) and come back later on after and post it up.
Woodrube said:
Ya no dice on that one. Just charge it up and run it for a few hours and then pull a screenie of Processes and Since Unplugged. I wanna set what it shows for your Android System as that is your main culprit.
Some things right off that I see with this last screen shot. First, I don't think that your JuiceDefender is working properly. Usually there is a Red, Green or Blue dot in the upper right corner of the shield. This is an indicator of your radio state. Second, that Revamped Nexus S live wallpaper will munch your battery. It's cool and I own it too, but it does cause some issues with battery, not neccessarily wakelocks though. Third, that Battery Monitoring widget is eating it up too. Not sure if the icon on the top-left is for that or not, but if it is in the notification area, then it is polling and is not caching causing drainage.
Those are just what I am seeing from this last screen. I am more interested in the Processes/Since Unplugged screen shot. Charge up and go get some lunch/dinner (depending on where you are) and come back later on after and post it up.
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Here you go. Great replies so far!
Sent from my SGH-T999 using xda app-developers app
Bump. Anyone?
Sent from my SGH-T999 using xda app-developers app
lazarat said:
If your screen on time is not around 4+ hours then you most probably are not getting good battery life.
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When I use my cell all the day NOT on WIFI, I get around 3 hours screen time (auto brightness - brightness medium most of time)
When I use my cell all the day with WIFI, I get 5 hours screen time (auto brightness - brightness medium most of time)
do I have a problem with my battery ?
Matrix_19 said:
When I use my cell all the day NOT on WIFI, I get around 3 hours screen time (auto brightness - brightness medium most of time)
When I use my cell all the day with WIFI, I get 5 hours screen time (auto brightness - brightness medium most of time)
do I have a problem with my battery ?
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Mobile Data uses more power than WiFi. Your stats are pretty good.
This is my battery life on Wicked.
Sent from my SGH-T999 using xda app-developers app
I usually only get around 2 hours of screen time. What gives?!
Sent from my SGH-T999 using xda app-developers app