CASE CLOSED!!! Please read bottom part or flash stock GB 2.3.4!
I have posted this already on another thread (almost word for word) but I just really want you guys know and not panic about this problem and avoid going through difficult fixes like deleting system apps, recalibrating battery or even resetting your phone.
Since JVK was released, many observed that Android OS sometimes get hungry and devours battery. For some reason it is triggered to go berserk. Others say that the main culprit is the Auto update app. But other apps like Google Maps, Latitude and even just in a place where there is very low network signal or Wifi reception could also trigger this problem.
Now, I have a very simple solution: Turn off device, remove battery for a minute, put it back then turn it ON. Yes it is just that simple, REBOOT YOUR DEVICE.
Yeah after you turn on your device Android OS is still on the top of the list with high percentage but I believe it is just as it is because it previously consumed a lot of battery. All you have to do is observe again for an hour if your battery is dropping again, look into the graph and see if it is still steeping to the bottom. If it is dropping like Mt Everest, do the procedure above again.
If not, you will observe that after a couple of hours Android OS's percentage is getting low. Problem is fixed, (temporarily though).
Why go through deleting apps, recalibrate battery etc when you could just turn off your device for a minute?
I have experienced it a lot of times already (one of the first users who upgraded to JVK) but it doesn't bother me anymore. Turning off then on your device is very simple ain't it?
I highly advise that you do not touch anything on the sensitive part of your phone as there is no known single root of this problem. Just like I told you, many situations or apps could trigger Android OS to go berserk. Until there is no definite solution to this problem, I suggest you do the above procedure and save yourself from going through the pain of removing system apps, battery calibration or even hard reset.
By the way my battery usually lasts 3-4 days unless I made Android OS angry again.
INVESTIGATION
INVESTIGATION CLOSED!!! The culprit is caught. But the fix is not so simple. Only Samsung and genius devs (apparently the fix requires closed source modification) could fix this. If the problem occurs on your device, just do the temporary fix above. Please do not try to mess with your device for now.It is now fixed in XXJVP 2.3.4!
Click HERE and read the bottom part for more details.
All this is due to Tatsuya who pointed us to the right direction. A big thanks to him for helping us in this investigation. CASE CLOSED
Tatsuya79 said:
Ok thanks for the credits.
This previous link I gave explains how you can use watchdog to alert you when this bug triggers, so you know when to reboot your phone to stop this leakage (if you really want to stay on gingerbread until a fix is made by Samsung).
Click to expand...
Click to collapse
Guys if you want to help out please please please dial this *#*#4636#*#* and check "Usage Statistics" and let us know the top 3 items on the list! (highly suggested by {Angel}).
Below are some of the possible culprits currently pointed out by some users (I will update the list based from your feedback):
1. Software Update service
2. Google Maps
3. Latitude
4. Low network signal
5. Very low WIFI reception
6. Auto updates in Market
If this helps, a simple thanks is enough
This is a post coming from Angel:
{Angel} said:
Those of you with high drain, you can also check battery history through *#*#4636#*#* and see what you have under other usage 'running' and see if your phone as not been sleeping lately. I get this occasionaly with froyo and I suspect many people do also. A reboot fixes it for me, after that my battery usage is superb, but it's annoying as hell.
Click to expand...
Click to collapse
And this is my post somewhere:
jbdroid said:
Yes just like I said in the first post, this is just a temporary fix. But I think users should just do this rather than touch anything on their phone unless they really know the source of the problem.
That is why I suggested that they report what could be the possible triggers, like apps or situations, that make Android OS to awake and gobble up the battery. If we could just pinpoint those triggers maybe we can now figure out the root of the problem. Your fix of removing a system app, the auto update app, is not even the single source of the problem. We just do not know if that app is an essential app or not. Sooner or later you will have that problem again.
I am not saying we should just sit and wait. All I am saying is if you are a plain user and you do not know the exact root of the problem, then just do what I suggested. But if you are a dev and is exploring the root of the problem, then do as you like and we will be most thankful if you find out the answer.
People are mislead about what works and what is not. I just want to help.
Click to expand...
Click to collapse
Rebooting works, and it seems to be working until you start some apps again. I have the same apps installed as I had on JPY, but JVB drains my battery dead in half a day.
luci.pacurar said:
Rebooting works, and it seems to be working until you start some apps again. I have the same apps installed as I had on JPY, but JVB drains my battery dead in half a day.
Click to expand...
Click to collapse
Could you pinpoint some apps? I will update the OP to keep track of possible culprits so that others will avoid triggering this problem. Thanks!
I once saw that the battery drain from 95% to 9% after one night, and the android os used most of it. I rebooted my phone, and the problem has gone away, since. Happy with Gingerbread!
I'll give it a go! thnx
Active Widgets: WeatherBug Elite, 3G Watchdog, BatStat and Calendar.
Apps: All from above plus Twitter, Titanium Backup, Facebook, Twitter, Tapatalk, Camera360 Ultimate, Root Explorer, Foursquare.
Mostly I use the Twitter client and the browser. Location services are disabled.
It is hard to figure out from the above apps or which is the most probable suspect. Just incase the problem recurs on your phone, dial this: *#*#4636#*#*, Go to Usage statistics and Battery Information and please report back (include also information on the Battery Use in Settings).
I hope we can help others avoid having this problem until there is a fixed solution.
Thanks!
Did what you suggested and pulled the battery at 30% waited 5 minutes and put it back in.... 1hr later it was at 35% (WTF!) and 30min later it was at 38% (WTF!)
im assuming its recalibrating?
Not necessarily. Maybe the battery meter is anticipating the fast consumption rate of Android OS that is why when it got fixed, the meter is able to readjust the readings based from the current consumption rate of your phone. Good to know it helped
Maybe use the 'forbidden' task killer? Works for me... Maybe im imagening it but works.
Btw my battery goes quickly down after getting below 25%. My battery not calibrated? Should i.calibrate it? I have this program to do it but am afraid that calibration goes wrong. (example what if my battery is 95% and will calibrate to 100. What if.i charge my battery higher than this.. Will it show 104%? Or will android stop working for it cannot be displayed in the notificationbar.
Using cm7.
Sent from my HTC Desire using XDA App
You do not have to recalibrate. Cm7 has a known issue about battery. I think you cannot charge past 94 or 95 percent and battery usage is a bit terrible. Please refer to cm7 thread for possible fixes, (the last time I checked their thread, they say it is probably kernel related).
Just turning off, pulling the battery and turning on does do a lot for me! i went from 10% per hour to only 1%! great thnx!
Hi,
About battery drain in gb, once fixed the wifi sleep policy issue ( by setting it to "never") u shouldn't have batt drain, but i've installed green power ( juice defender do the work too i think) to get some wifi management possibility back and it improuved my batt life.
But never the less, my battery won't last more than one day of hard usage ( being hanged on xda all day long, for instance ;-)
Sent from my GT-I9000 using XDA App
Guys, just turn off the task killer, it helped in my case. looks like its not working well on ginger
Rebooting works just temporarily.
It will come back the next day or so.
This is not a solution at all tbh.
Yes just like I said in the first post, this is just a temporary fix. But I think users should just do this rather than touch anything on their phone unless they really know the source of the problem.
That is why I suggested that they report what could be the possible triggers, like apps or situations, that make Android OS to awake and gobble up the battery. If we could just pinpoint those triggers maybe we can now figure out the root of the problem. Your fix of removing a system app, the auto update app, is not even the single source of the problem. We just do not know if that app is an essential app or not. Sooner or later you will have that problem again.
I am not saying we should just sit and wait. All I am saying is if you are a plain user and you do not know the exact root of the problem, then just do what I suggested. But if you are a dev and is exploring the root of the problem, then do as you like and we will be most thankful if you find out the answer.
People are mislead about what works and what is not. I just want to help
Guys, on Gingerbread I've had battery drain two times:
1. Had about 14% drain in 3 hours all of a sudden, without doing anything at all. Just started going down for some reason.
2. This morning, saw about 40% drain in 7 hours..
And, both time I solved it by Clearing Memory from the Task Manager.. Went back to normal 2-3% drain per 6-7 hours after that..
So this might also be a solution. Go to Task Manager, RAM tab, and Clear Memory..
i'm on ginger also and my battery acts weird. 2 days ago i charged my phone over night while it was closed. the battery holds for 15 hours with massive use.
last night i did it again, but today it went from 98% to 80% in about an hour !
this is really weird.
addicted2088 said:
Guys, on Gingerbread I've had battery drain two times:
1. Had about 14% drain in 3 hours all of a sudden, without doing anything at all. Just started going down for some reason.
2. This morning, saw about 40% drain in 7 hours..
And, both time I solved it by Clearing Memory from the Task Manager.. Went back to normal 2-3% drain per 6-7 hours after that..
So this might also be a solution. Go to Task Manager, RAM tab, and Clear Memory..
Click to expand...
Click to collapse
Did you manage to check first what is running on your device by looking into Battery Usage settings? I think you have a case of rogue application running in the background.
If you have not rebooted yet could you please attach a screenshot of the battery usage list and graph? In that way we might possibly identify the app running prior to the clearing of memory. Thanks!
Hi! It is a first for me to post a thread here at XDA. I really need your help regarding this battery issue on my S7 Edge Exynos (Factory-Unlocked). The first time I got this device I was very impressed the camera, screen and most specially the battery life - hands down for this device. But I had an issue on my first device and the Samsung Service was able to replace it - the first device got a stuck pixel and then the replacement unit got another issue, another pixel problem. So, Samsung Service did is to replace the screen, actually they replace most of it to make it short they only transfer the internals from another new phone - the motherboard, camera, and battery even the back panel is new. Then after I got the unit and updated the OS to Marshmallow 6.0.1. April 2, 2016 security patch level I notice that it drains battery faster that the first time I got the device. I guess a 8-10% per hour when using it on LTE, locations off, sync off, auto-brightness on. Then what I did is visit Samsung Sevice to let them check the device, they hooked it up on their pc and run a diagnostic test and no battery problem found. I was wondering if my battery usage is normal. I was not a techy guy but I just compared it before it got fixed from 100% to 99% it drains I guess for 2-3 minutes and a screen time is 3-4 hours max and 15 hours on battery. Really appreciate your help! Thank you! By the way the apps I regularly use are facebook, instagram, twitter, social messaging apps and most of the time web browsing on chrome.
Paragraphing? Search? Did you try? Follow the links, read...
Yes been trying to search regarding this issue and found some but does not directly answer the issue on my device. Anyway thanks.
Facebook is a well known battery drainer, maybe install GSam from the play store and monitor what is draining the battery the most.
Okay will take note on that. Thanks alot!
I had really crappy battery lifetime and it drained juice like hell! I made sure wifi and bluetooth was off when sleeping(screen off). Tried every guide ive found but newer got to the root of the draining problem.
I did an factory reset and the problem was GONE. Now I have 1,8%/hour drain with normal usage included bluetooth headset connected, and 50% brightness with batterysaving enabled. kept 100% after unplugging from fastcharging for 1hour without usage.
If u struggle, try a factory reset! its simple, and if u have backup it doesnt take long to recover!
risdj said:
Okay will take note on that. Thanks alot!
Click to expand...
Click to collapse
Look at your firmware version. If it ends in APD1 or higher, then battery drain is a known issue that can only be fixed by downgrading to APC8 or lower. In battery stats, if Android System has double digit (12%+) drain then you have APD1 or higher and the known battery drain issue.
Okay thank you! really appreciate your advices.
Hi Guys, i just got this phone 2 days back. i should really mention that its an wonderful device, great display, fluid usage, everything is quite fine except battery. The very first night i had left my phone for rest by switching off WiFi and Data connection with more than 35%, next morning i was in surprise, phone was not turning on at all, then after charging it for few min it booted back with 5% charging. the same thing happened last night as well, i had purposefully charger it to more than 40% and wholla in the morning it was just 5% remaining.
i'm on stock COS rom with no changes.
So you good people, i really ask u to help me,
Is it happening with other phones as well?
should i get a replacement as i still have return period?
Thanks in advance
Nope. Mine is perfect. What have you tried to find the cause for battery drain? ??
h0LLe said:
Nope. Mine is perfect. What have you tried to find the cause for battery drain? ����
Click to expand...
Click to collapse
Thanks for your time.
May i know whats battery drop in idle mode, probably over night in your phone?
i have only installed only Whatsapp as of now and no other apps apart from the stock ones. when i check battery info everything seems to be okay with the apps apart from the constant battery decline in the graph.
I have reset my phone and trying to identify the cause of the battery drain.
please do share if you have any apps or tips to identify the cause.
Thanks again
Hi everyone, I wanted to ask for information about battery life and usage learning models. I wanted to know if there is a method to reset battery statistics so that they "learn again" the battery usage patterns. I've bought the phone for a few days, and during the first few days I stressed it a lot, now that I've learned how to use the battery, when it's 100% charged me as a residual time of 10 hours (no energy savings) . My brother who has the same phone gives him more as time left.
I tried to delete the data from the "Device Maintenance" application, but nothing to do, I could reset the phone but I would avoid it. Does anyone know how to help me? Thank you.
Practically I would like to "learn again" the battery usage patterns, as I normally do not stress it as much as I did the first few days.
ExileTM said:
Hi everyone, I wanted to ask for information about battery life and usage learning models. I wanted to know if there is a method to reset battery statistics so that they "learn again" the battery usage patterns. I've bought the phone for a few days, and during the first few days I stressed it a lot, now that I've learned how to use the battery, when it's 100% charged me as a residual time of 10 hours (no energy savings) . My brother who has the same phone gives him more as time left.
I tried to delete the data from the "Device Maintenance" application, but nothing to do, I could reset the phone but I would avoid it. Does anyone know how to help me? Thank you.
Practically I would like to "learn again" the battery usage patterns, as I normally do not stress it as much as I did the first few days.
Click to expand...
Click to collapse
You don't need to do a reset. It never stop learning. It will continue to learn your battery and adjust itself as your usage change. Just wait...
Sent from my SM-G935F using Tapatalk
Hi everyone, I have a problem with my sister''s phone (SM-G903F) , after the last charging it's draining extremely fast battery with 1%/minute. Even with phone turn off and battery inserted , the area around sim card is overheating in just a few minutes and battery drain extremely fast. I replaced the battery with a new one .... no effect .I have accessed the battery usage in settings and I saw that the screen consumes 100% although the brightness is 50% and the screen darkening time is 30 seconds What may cause this problem and what could be the solution ? Before to send it to service center I wish to try your ideas. Until then I must keep the battery out of the phone. Thank you for any help
Trasorv said:
Hi everyone, I have a problem with my sister''s phone (SM-G903F) , after the last charging it's draining extremely fast battery with 1%/minute. Even with phone turn off and battery inserted , the area around sim card is overheating in just a few minutes and battery drain extremely fast. I replaced the battery with a new one .... no effect .I have accessed the battery usage in settings and I saw that the screen consumes 100% although the brightness is 50% and the screen darkening time is 30 seconds What may cause this problem and what could be the solution ? Before to send it to service center I wish to try your ideas. Until then I must keep the battery out of the phone. Thank you for any help
Click to expand...
Click to collapse
Well everything I can say is reinstall stock system or less using
I already did this. ........no effect of course