Develop Bugs

"Android OS" consuming battery [POTENTIAL SOLUTION]

EDIT
I was able to solve my battery issue by formatting my SD card. Something on there was causing the battery to drain 2-3 times more quickly than normal. After formatting, I went from 6-8 hour battery life to around 20 hours with significant usage (Google, Exchange, IMAP, Facebook all on push, 3G+Bluetooth+GPS on, 4G and wifi as needed for extra speed).
Important to note, I am not entirely convinced that the Android OS and battery drain are related since I still have Android OS near if not at the top of my battery consumption screen, but the improved actual longevity is very significant. I recommend anyone having their battery run out format their SD card (and possibly USB storage) and see if that helps (obviously back up any important data first!). Good luck!
ORIGINAL POST
I'm getting pretty bad battery life, and it looks like "Android OS" is consuming most of it. I've rebooted (as suggested in other threads), checked OS Monitor for high-CPU usage processes, but nothing stands out. This is un-rooted, stock OS with no third party launchers installed.
I have a feeling if this issue was fixed, I'd be getting great battery life. This happening to anyone else?
Screenshots show the device at 38% after 6.5 hours off the charger.
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if u using a 2.3.3 based rom is normal, that bug is fixed at 2.3.4 and 2.3.5
Sent from my GT-I9000 using Tapatalk

Dfolt said:
if u using a 2.3.3 based rom is normal, that bug is fixed at 2.3.4 and 2.3.5
Click to expand...
Click to collapse
xak944 said:
This is un-rooted, stock OS with no third party launchers installed.
Click to expand...
Click to collapse
My device is running 2.3.4.

That's an awful lot of awake time with no screen on time. Do you have things updating in the background frequently? I.e. social hub, Facebook, news widgets?
And not to be too obvious, but is your 4g antenna turned on?
Sent from my SPH-D710 using XDA App

MoMatt said:
That's an awful lot of awake time with no screen on time. Do you have things updating in the background frequently? I.e. social hub, Facebook, news widgets?
Click to expand...
Click to collapse
No, I don't. I have fewer widgets and fewer accounts (haven't set up my work Exchange yet) than I previously had on my EVO, which got great battery life.
I've been on Android over a year and am quite familiar with how it works... I'm just unfamiliar with Samsung specifically and unrooted devices and was hoping someone might have a similar experience.

I have the same thing. Significantly more awake time then screen on time, and Android OS eating the battery. Also stock.

Same here too

I had this exact issue and no longer do. Here is what I did and posted in another thread:
OK I hope someone finds this useful and/or can verify. I was one of those people getting awful battery life, meaning lucky to last 8 hours from 100% to 0%. The "Android OS" process would take hours of CPU time. Now it will take up maybe 30 min over the course of the day. Here is the only thing I did between the time it went from bad to good. I changed the wifi sleep policy. It is by default (for me at least) set to never. I changed it to "when the screen turns off" and left it there for about an hour. Then went in and changed it back to never. From the point of doing this my battery life has been great.
I know it sounds strange but it seems to have worked for me so I thought I would share.

mjdoran said:
I had this exact issue and no longer do. Here is what I did and posted in another thread:
OK I hope someone finds this useful and/or can verify. I was one of those people getting awful battery life, meaning lucky to last 8 hours from 100% to 0%. The "Android OS" process would take hours of CPU time. Now it will take up maybe 30 min over the course of the day. Here is the only thing I did between the time it went from bad to good. I changed the wifi sleep policy. It is by default (for me at least) set to never. I changed it to "when the screen turns off" and left it there for about an hour. Then went in and changed it back to never. From the point of doing this my battery life has been great.
Click to expand...
Click to collapse
Thanks for the suggestion!
I made the change, hopefully it will help, although I'm reluctant since I haven't had wifi on all day and my battery has been dropping like a rock. Here's hoping... will report back if it helps.

xak944 said:
Thanks for the suggestion!
I made the change, hopefully it will help, although I'm reluctant since I haven't had wifi on all day and my battery has been dropping like a rock. Here's hoping... will report back if it helps.
Click to expand...
Click to collapse
I rarely use wifi as well but this setting seemed to affect the phone in general, if your using wifi or not. I might just be crazy though. Either way I no longer have the issue so

does the google voice widget pull data in the background or is it a push thing?

I'm seeing high usage (60+%) by AndroidOS also (stock, unrooted, not using WiFi, not using 4G), although battery life has not been bad that I have noticed.
Watchdog Lite indicates that this is primarily due to two processes:
events/0
suspend

mjdoran said:
I had this exact issue and no longer do. Here is what I did and posted in another thread:
OK I hope someone finds this useful and/or can verify. I was one of those people getting awful battery life, meaning lucky to last 8 hours from 100% to 0%. The "Android OS" process would take hours of CPU time. Now it will take up maybe 30 min over the course of the day. Here is the only thing I did between the time it went from bad to good. I changed the wifi sleep policy. It is by default (for me at least) set to never. I changed it to "when the screen turns off" and left it there for about an hour. Then went in and changed it back to never. From the point of doing this my battery life has been great.
I know it sounds strange but it seems to have worked for me so I thought I would share.
Click to expand...
Click to collapse
I'm having the exact same issue. Stupid question here (I've already tried to find it and googled it too, but no success.
Where do you change the wifi policy? I don't see it under wifi settings

limeaid said:
Where do you change the wifi policy? I don't see it under wifi settings
Click to expand...
Click to collapse
Wifi Settings > Menu > Advanced

limeaid said:
I'm having the exact same issue. Stupid question here (I've already tried to find it and googled it too, but no success.
Where do you change the wifi policy? I don't see it under wifi settings
Click to expand...
Click to collapse
Settings >> Wireless and Networks >> Wi-Fi settings
Then press the menu button and then advanced.
Should then be the first option "Wi-Fi sleep policy".

Thanks. Like everyone else, I'm going to try this out and report back after a day or so

I'm trying to get into the 'INFO' section to view wake locks for battery usage clues. I've tried *#INFO*1111# (as mentioned here) and the old *#*#INFO*#*# to no avail. Anyone been able to get to the diagnostic screen from the dialer?

Are people with battery problems using widgetlocker?

JoeBruin32 said:
Are people with battery problems using widgetlocker?
Click to expand...
Click to collapse
Interesting. I installed it yesterday. Will try removing it if the wifi setting doesn't work...
Is anyone with the "Android OS" battery drain not using widgetlocker?

xak944 said:
Interesting. I installed it yesterday. Will try removing it if the wifi setting doesn't work...
Is anyone with the "Android OS" battery drain not using widgetlocker?
Click to expand...
Click to collapse
I am not and was not using it.

Stock ICS - post-update issues, swype, battery, SU

I waited a LONG time for the stock ICS to be released. Three days ago, I finally had enough, updated to AOKP - so of course the very next day saw an Engadget article saying the ICS OTA update would be over the next few days. Since I was disappointed the AOKP doesn't offer the same Exchange account sync schedule options as stock (important to me due to my work), I flashed back to stock, rooted, no CWM, just stock recovery, and planned to wait out the stock ICS update.
Last night, I flashed the stock ICS update via QBKING77's link in the video:
http://www.engadget.com/2012/07/12/..._campaign=Feed:+weblogsinc/engadget+(Engadget)
I went to bed without playing with it much, it was late.
I woke up this morning, sent a few text messages and played with trying to get swype to work - in 20 minutes, used up 6% of my battery! 20 minutes later, not using my phone (I was on my computer searching here) another 5% of my battery used. In less than an hour, I was at 85%.
Looking at the Battery chart, I see my "mobile network signal" is staccato, interrupted black and green, green only 50-60% of the time. Not sure if this is contributing.
I have BetterBatteryStats installed. I work with little kids Saturday morning, then have a date, so I'll have quite a bit of time with my phone where it should be sleeping, so I should be able to build some stats - but any help is appreciated, I'm going to have to carry an extra battery with me at this rate.
I also can't get Swype working. I've seen comments like this:
RainMotorsports said:
Clear the data for swype, you lose the dictionary but it will work after that.
Click to expand...
Click to collapse
How is this supposed to be done?
I recalled the dictionary comment when reading last night, so cleared the dictionary from the Settings --> Language and Input --> Swype settings. That didn't resolve it. I'm noticing that many of the settings in this category are entirely unresponsive as well.
If I go into Swype from Settings--> Applications, the Clear Data button is greyed out.
Force Stop doesn't enable the button, Disable doesn't enable the button.
It also just continuously shows "computing" for the space stats.
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And I've lost 4% more as I've been typing this on my PC - phone not even on.
Another odd effect - I was rooted before updating (but again, no CWM, just stock recovery, rooted kernel), but of course am not rooted now. However, when I move around the phone, accessing certain things, I'm noticing the permissions popup box appears "[application] has been granted superuser access". Is this contributing? Should I uninstall superuser app? I just figured I would wait a day or two until a rooted FF18 kernel was available and then I'd be back as I was, rooted.
Any thoughts on these? I can't believe Samsung or Sprint would have released it this way... maybe others aren't experiencing these? I'm not seeing many threads with people complaining about them, and most people seem to be able to fix Swype like it's a simple fix - clear data, no prob.
Any help is appreciated, thanks.

I know I've seen it, but can't find it at the moment, but did you pull your sd card out when trying to clear data to avoid the computing issue?
And I know I saw a thread with a fix for it but is driving me crazy that I can't find it. :banghead:
Sent from my SPH-D710

After flashing anything. new, allow the battery to cycle a few times before expecting a clear reading.
Other than that, I'm unsure.
Mine works fine! settings all set to battery friendly. Auto brightness off set to low, no haptic or vibrating ever, no touchkey lights, etc.
FF18 SFHub Rooted

On the "computing" issue. Others have talked about it here.
Knew I saw it..
Sent from my SPH-D710

MoHoGalore said:
On the "computing" issue. Others have talked about it here.
Knew I saw it..
Sent from my SPH-D710
Click to expand...
Click to collapse
Awesome, that actually worked, for the Swype issue - it stopped "computing", and when it did the "clear data" button appeared.
I'll leave my SD card out for now (about 45 gig of music on it is all that's on there), we'll see if anything else changes or smooths out.
Sounds like it shouldn't be a problem when I put the SD card back in, either (fingers crossed)

mcadamry said:
After flashing anything. new, allow the battery to cycle a few times before expecting a clear reading.
Other than that, I'm unsure.
Mine works fine! settings all set to battery friendly. Auto brightness off set to low, no haptic or vibrating ever, no touchkey lights, etc.
FF18 SFHub Rooted
Click to expand...
Click to collapse
This seems more extreme than that.
I'll bring an extra battery with the car, if I run completely out we'll see what happens - but I'm wondering now if I swap the fully charged battery in, if that'll throw off the battery stats too. I never understood those battery stats.

I just tried to do a Better Battery Stats dump to file, but the file it produced is empty.
I thought it was going to be too big if anything, I checked all the boxes in "dumpfile settings".

I also had swype problems. It said failed to load english or something similar.
Clearing it help. thanks!

Well - it's about 7:30, I've had somewhat average use of my phone today, but I hit power saving mode (30% battery remaining) at 7pm, which is about 3-4 hours sooner than I usually do - and it's actually worse than that because I didn't unplug my phone from the charger this morning until about 11am - so that's about 2-3 hours later than I usually do.
Means I'm getting something like 6-7 less hours of battery life on this ROM.
I tried to generate a Better Battery Stats dumpfile but it looks like the text file was blank - anyone know how to do this?

geolemon said:
Well - it's about 7:30, I've had somewhat average use of my phone today, but I hit power saving mode (30% battery remaining) at 7pm, which is about 3-4 hours sooner than I usually do - and it's actually worse than that because I didn't unplug my phone from the charger this morning until about 11am - so that's about 2-3 hours later than I usually do.
Means I'm getting something like 6-7 less hours of battery life on this ROM.
I tried to generate a Better Battery Stats dumpfile but it looks like the text file was blank - anyone know how to do this?
Click to expand...
Click to collapse
I kinda expected this outta the 1st OTA to ICS... the few ICS ROMs I've used before this never gave me as good of battery life as stock GB did... I'm still on GB and I can get a full 18-20 hours out of it with what I consider to be pretty mod-heavy usage... Even though I expected it, it's till a let down .. unfortunately it prolly won't get much better until the Devs get a hold of it and tweak it out.. This whole crappy update situation is really turning me off android in general..

One thing I'm suspicious of is the new Sprint ID switcher thing. ..
The good: Open it. Switch from "Samsung" ID pack to "My ID" pack. Bam. Vanilla Ice Cream Sandwich launcher, no TouchWiz.
The bad: Download "Home Manager" app from Play market. Switch your ID's, and back. Observe both "Launcher" and "TWLauncher" are running. ...and if you had a third party launcher like I do (Go Launcher EX), you probably ALSO see that one "running", if you were using it.
You can use this app to kill the others, but it seems temporary. Having 2-3 launchers simultaneously seems like that could use a little more battery to me - and this is a built-in Samsung feature now.

Ics update battery fix
I found a way to greatly improve battery life after the update. Hold in the home button and a recent apps menu will pop up. Swipe apps to clear and android os battery consumption will drop to less that 35% mine was running at like 75% before i figured this out.

Correction its at 13% now. Much better than 75. Hope this helps
Sent from my SPH-D710 using xda app-developers app

Horrible Battery Life

It would seem that after I installed the AT&T update to dumb down thr search on my phone, my battery life has been terrible. Yesterday it was down to about 30% after only 4 hours of light use with the processes "Android OS" and "Cell Standby" taking up the most battery. I can't even get through the day with this phone. Some help would be much appreciated.

After any update, give it a couple days to level out. Until then, just carry an extra charger and plug in when you can.

The update was installed at least a week ago.

In that case, backup everything and do a factory reset when you have a fully charged battery.

Alright I'll give it a shot. I needed to do that anyway as my clipboard no longer works and consistently crashes. :/

I did a factory reset a few weeks ago and that solved it for me.

Do you have any specific methods for backing up a phone that isn't rooted? I've got nova backed up, but I would like to make sure everything else is too.

FlyinHi said:
Alright I'll give it a shot. I needed to do that anyway as my clipboard no longer works and consistently crashes. :/
Click to expand...
Click to collapse
Are you receiving push email? that was the major drainer for me. apparently the android email app has a bug.
Regarding clipboard...delete everything in data/clipboard; force close the 'test service' app and then restart your phone

FlyinHi said:
Do you have any specific methods for backing up a phone that isn't rooted? I've got nova backed up, but I would like to make sure everything else is too.
Click to expand...
Click to collapse
The best method would be to use titanium backup but since your not rooted I don't know what options you have except to use the google backup but that ain't to good since its only app data.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Hi all,
Since getting the phone from day one, I really never had a problem with the battery. Lately however, I've noticed a significant drain in battery over night. I tested the drain a few times over several nights, and even put my phone into "airplane" mode to help save battery.
Below are my results from going to sleep at 1:30am with 100% battery power and in airplane mode and waking up at 9:30am the next morning. I get a 12% decrease in battery over night for doing nothing over the course of 8 hours.
The only thing I've noticed differently is that Chrome is starting to use battery which is odd because I rarely use Chrome to begin with.
Any ideas to help this? What should I do?
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Death&co said:
Hi all,
Since getting the phone from day one, I really never had a problem with the battery. Lately however, I've noticed a significant drain in battery over night. I tested the drain a few times over several nights, and even put my phone into "airplane" mode to help save battery.
Below are my results from going to sleep at 1:30am with 100% battery power and in airplane mode and waking up at 9:30am the next morning. I get a 12% decrease in battery over night for doing nothing over the course of 8 hours.
The only thing I've noticed differently is that Chrome is starting to use battery which is odd because I rarely use Chrome to begin with.
Any ideas to help this? What should I do?
Click to expand...
Click to collapse
I had the same problem this morning chrome had like 26% and it showed no cpu use my phone was down from around 88% to 56% I know for a fact it was chrome so try un installing it.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Yeah I've noticed a huge jump in Android System usage since I flashed the UCLG1 update.
Currently
18h 27min on current charge
screen on 1h 22min
Android system = 51%

DudeWatsThat, thanks I'm going to give it a try and see if uninstalling Chrome changes anything. It just boggles my mind that in airplane mode over night it would drain the battery 12%

nest75068 said:
Yeah I've noticed a huge jump in Android System usage since I flashed the UCLG1 update.
Currently
18h 27min on current charge
screen on 1h 22min
Android system = 51%
Click to expand...
Click to collapse
That
ain't normal for sure.
Death&co said:
DudeWatsThat, thanks I'm going to give it a try and see if uninstalling Chrome changes anything. It just boggles my mind that in airplane mode over night it would drain the battery 12%
Click to expand...
Click to collapse
Yea its definitely a rare bug since Chrome wasn't even displaying cpu usage.
Sent from my GSIII

i second that problem about Chrome. I think it is a bug regarding the builtin flash code. my battery was great until i installed Chrome then it got really bad. I uninstalled Chrome and my battery life jumped up big time. huge different. too bad i really like Chrome but no go right now

Not sure if it's the same issue, but I had some problems with battery life in Chrome until I disabled Tilt Scrolling under Developer Options in the Chrome menu.

my battery life is great even after the update

I think my battery is faulty. Need opinions.

Hello guys, before I send my unit back which is really annoying I would love to have some feedback.
So here we are.
First of all since I got my unit I has never been able to charge it through the usb port of a laptop, too slow, maybe 5% in one hour.
The second problem is that the battery drain very fast even if I'm not using it.
Now before posting this report I've disabled almost everything ( BlinkFeed, location service etc..) but as you will see now I've only used my phone for about 2:30 hours in 15 hours without doing nothing of special, I mean, checked Google plus, surfed the web, some post on xda and all this with no phone calls and always under WiFi.
Hope someone will give me some feedback.
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your battery drain seems normal honestly, its a big screen so it'll suck up battery. Also make sure you use the htc cable, it should charge better than a generic usb

velenox said:
Hello guys, before I send my unit back which is really annoying I would love to have some feedback.
So here we are.
First of all since I got my unit I has never been able to charge it through the usb port of a laptop, too slow, maybe 5% in one hour.
The second problem is that the battery drain very fast even if I'm not using it.
Now before posting this report I've disabled almost everything ( BlinkFeed, location service etc..) but as you will see now I've only used my phone for about 2:30 hours in 15 hours without doing nothing of special, I mean, checked Google plus, surfed the web, some post on xda and all this with no phone calls and always under WiFi.
Hope someone will give me some feedback.
Click to expand...
Click to collapse
Battery is in good state! No need replace! It just your screen and bloatware which are consuming battery! Use lux auto brightness instead of stock auto brightness and use custom rom like paranoid or cyanogen in which bloatware are already removed!
Hit thanks if i helped you out! ?
Sent from my C5302 using Tapatalk

Thanks all guys!
I got in touch with HTC and they asked me to perform a battery test, well, after one hour at full display brightness the battery only consumed 10%.
And yes...since the phone is branded by Vodafone there is some bloatware.
I will removing some stuff and working on the screen brightness

I have the best battery performance of any phone I owned on the M8.
Try Wakelock Detector. I suspect you'll find that Google+ is one of the main culprits constantly waking your phone from deep sleep.

berndblb said:
I have the best battery performance of any phone I owned on the M8.
Try Wakelock Detector. I suspect you'll find that Google+ is one of the main culprits constantly waking your phone from deep sleep.
Click to expand...
Click to collapse
In fact, did you see how many awake? The problem is that would not root the phone right now, and if I'm not mistaken wakelock detector requires root access.

While today I've had better battery life, I think I have some problem with wakelocks
Here some stats
Should I investigate further?

I would. Your phone was awake for around three hours whilst the screen was off. Check wakelocks with betterbatterystats.

My M8 averages 48-72 hours between each charge, but although I have both 4G data and location services enabled, Wifi is switched off and I rarely watch movies on the handset.
For me, the M8 has extraordinary battery life.
I have found that Battery Doctor is very effective at fully charging - and keeping a record of full charge cycles.

westeight said:
My M8 averages 48-72 hours between each charge, but although I have both 4G data and location services enabled, Wifi is switched off and I rarely watch movies on the handset.
For me, the M8 has extraordinary battery life.
I have found that Battery Doctor is very effective at fully charging - and keeping a record of full charge cycles.
Click to expand...
Click to collapse
I've found that mine unit consume more while is under WiFi.
I don't watch movies.
My usage is :
45 minutes phone call everyday
Gplus
Internet browsing
Some text messaging with telegram
That's all.

pkoper said:
I would. Your phone was awake for around three hours whilst the screen was off. Check wakelocks with betterbatterystats.
Click to expand...
Click to collapse
Sadly I don't have root, but I'm using Wakelock detector which with a workaround I can track which app is causing problems.
I've saw two process here the screenshot.
Here the full list (almost)
I've searched the two first process here on xda but I haven't found a fix.

Hello, i bought the phone 2 months ago and its origin is poland (T-Mobile) and i am experiencing the same issue as yours!! A lot of waklocks and cant seem to find the source!! can you help solve this issue? and how did you succeed to install the wakelock detector on the phone if it was not rooted (mine isnt also)!! thank you

Mondea said:
Hello, i bought the phone 2 months ago and its origin is poland (T-Mobile) and i am experiencing the same issue as yours!! A lot of waklocks and cant seem to find the source!! can you help solve this issue? and how did you succeed to install the wakelock detector on the phone if it was not rooted (mine isnt also)!! thank you
Click to expand...
Click to collapse
Indeed is not funny.
For installing Wakelock Detector without root follow this instructions:
https://docs.google.com/presentation/d/1r3VlhZIZVSufZlAeICJet6QBtyAF7z06_ysl1kUKME4/edit#slide=id.p
It's easy.
Now the problem is understand what cause all these wakelocks

velenox said:
Indeed is not funny.
For installing Wakelock Detector without root follow this instructions:
https://docs.google.com/presentation/d/1r3VlhZIZVSufZlAeICJet6QBtyAF7z06_ysl1kUKME4/edit#slide=id.p
It's easy.
Now the problem is understand what cause all these wakelocks
Click to expand...
Click to collapse
Hey! Thank you for your fast reply!! i think i am still a noob for these stuff and i am stuck at step 5 knowing that i have a mac!! so can u help me do that please ? thank you in advance

Mondea said:
Hey! Thank you for your fast reply!! i think i am still a noob for these stuff and i am stuck at step 5 knowing that i have a mac!! so can u help me do that please ? thank you in advance
Click to expand...
Click to collapse
I think there are other tutorial on xda anyway.
open a terminal and run this code:
Code:
curl -O https://raw.githubusercontent.com/corbindavenport/nexus-tools/master/install.sh
than run:
Code:
sh install.sh
When you will will prompted for the password of your mac type it.
Just one thing.
After you have run adb devices and adb ticpip 5555 from your mac just unplug the phone and go ahead with the instruction.
Hope this helps.

Today I got a better battery life.
I will post what I did so can be useful to whom will face the same problems.
First I've set the brightness to the lowest level and I've activated the automatic mode.
Deactivated position service, turned off nfc.
I'm sure I can still fine tuning the battery, but for now I'm happy for the result.
Too much wakelock for service that ask for position (meteo widget, Google play service) but for now I got good results.
Here some screenshots:

Thank you @velenox i will give it a try!! and i will try your advices also!! Hope to find whats keeping our devices like this with lots of wakelocks!! Maybe these are bloatware because my device is from T-mobile Poland but unlocked and unbranded!! ??

Mondea said:
Thank you @velenox i will give it a try!! and i will try your advices also!! Hope to find whats keeping our devices like this with lots of wakelocks!! Maybe these are bloatware because my device is from T-mobile Poland but unlocked and unbranded!! ??
Click to expand...
Click to collapse
Don't know... But give it a try [emoji6]

Terrible battery life (H815, 6.0 Marshmellow)

Hi all,
I've had my LG G4 since September, and it's been a good phone. However, more so recently, the battery life has been terrible. When Doze decides to work on my phone the battery life is average, but it rarely seems to work. I use over 60% battery in 5 or 6 hours, and that's with most of the time the phone screen being off.
For example, tonight I went to see the new Star Wars film. Using that as a guide, my phone screen was off for about ~3 hours during that time. However, see attached, the battery is just being drained. There aren't any particular apps that I see using 90% battery or whatever - in fact, using a battery app, it looks like phone radio is using an incredible amount.
i.imgur.com/MCQ6Yz0.png
i.imgur.com/ziZEoEz.png
i.imgur.com/a8J9ufZ.png
Any tips for increasing the battery life? I don't see myself as an over user, but I often come out of an 8 hour work shift with just 20% left, and that's with mild web browsing every now and then, and maybe 20 minutes of YouTube video.
I'm thinking about doing a full restore on weekend after backing up my texts, or even ordering a new battery, but I don't feel this should be necessary.
My screen brightness is always 30% or lower. I don't know if this would have damaged the battery, but I use an Aukey quick charger.

-since how many days are using marshmallow ??
-What version ?? V20B or V20A ?
-Did you do a full factory reset after upgrading to MM?
Sent from my LG-H815 using Tapatalk

Hani88 said:
-since how many days are using marshmallow ??
-What version ?? V20B or V20A ?
-Did you do a full factory reset after upgrading to MM?
Sent from my LG-H815 using Tapatalk
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Click to collapse
Thanks for replying.
I've been using it for 16 days now.
I updated though LG Bridge, and software info says V20a-EUR-XX
I've not done a factory reset, no. Will that help? All my photos, music and contacts are on Google's servers so I would just need to back up SMS and a list of apps.

yatesl said:
Thanks for replying.
I've been using it for 16 days now.
I updated though LG Bridge, and software info says V20a-EUR-XX
I've not done a factory reset, no. Will that help? All my photos, music and contacts are on Google's servers so I would just need to back up SMS and a list of apps.
Click to expand...
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you are welcome
I think factory reset will help you.. My MM battery is very well
for me my sms storage is SD card
you can do it
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Sent from my LG-H815 using Tapatalk

Thanks. It looks like my SMS are already saved to my SD card, so hopefully they will work straight away.
I really hope a reset fixes it, as I heard such great things about the LG G4 battery (with people posting it can last 24 hours or more!), and this is very disappointing. I'm off this weekend, so I will do it then.
If anybody else has any fixes as well, I would love to hear them if this doesn't work! The phone is great so far... aside from this.

yatesl said:
Thanks. It looks like my SMS are already saved to my SD card, so hopefully they will work straight away.
I really hope a reset fixes it, as I heard such great things about the LG G4 battery (with people posting it can last 24 hours or more!), and this is very disappointing. I'm off this weekend, so I will do it then.
If anybody else has any fixes as well, I would love to hear them if this doesn't work! The phone is great so far... aside from this.
Click to expand...
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you are welcome
and please give marshmallow few days chance after updating to V20B then tell us how the battery goes
Sent from my LG-H815 using Tapatalk

you have a rogue app or something, there is nothing wrong with Marshmallow 20B (or 20A for that matter) and battery life. I get insane battery life on this phone, often 22 - 30 hours of fairly heavy use.
Now granted, my phone is rooted, bootloader unlocked, running stock 20B and I have installed a couple of apps to optimize it such as AdAway, LBE security, and KinScreen, but still, you have a misbehaving app most likely that needs to be kicked off your phone!

Is there a way of finding which app? Nothing stands out. I've just taken another screenshot (disabling uploads Google Photos didn't fix it)-should screen off be using this much battery?
imgur.com/NwpJ2Iw
A reset is definitly in order tomorrow

yatesl said:
Is there a way of finding which app? Nothing stands out. I've just taken another screenshot (disabling uploads Google Photos didn't fix it)-should screen off be using this much battery?
imgur.com/NwpJ2Iw
A reset is definitly in order tomorrow
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Click to collapse
sure, start with turning on Developer mode by hitting Build Number in rapid succession a bunch of times in Settings ---> About Phone ---->Software Info
then look in the new Developers Options section of Settings and look at Running Services & processes - you can also download an app for this such as Elixir 2
another good diagnostic tool is heat - heat and battery life are proportional, if your phone runs cool, it will get long battery life, if you pick it up and it is warm around the power/volume buttons, then something is amiss - you have a runaway app or process
download a tool like CPU Temp from the Play store and see what the CPU temp is when the phone is idle or you are doing something light like reading an article - it should be in the 78 - 89° F. range (25 - 32° C.) If the phone is not in this temp range, then something is amiss! - Also keep in mind that the main battery drain on the phone in normal operation is the display - keep auto-brightness on, and keep the display off when it is not needed! - also turn off stuff you are not using, such as Bluetooth, NFC, etc.

I did a factory reset as suggested above, and I think it fixed it. I didn't restore my LG backup as I figured that that'd restore the problem, so went through and downloaded apps again. I then left it on overnight.
After 6 hours it was still at 100% on Wifi, which is great! I then used the phone for ~2 hours (apparently pretty heavily) which actually dropped it to 58% - whoops. I then stopped using it again but this time without wifi, and it didn't keep at the same % - it seemed to drop 10% in about 2 hours. The only things I'd changed since then was install Skype (which I might delete if that's the issue), and had it on mobile data.
imgur.com/n58dP1D
Could mobile data REALLY make that much of a difference? I think I'll leave it unplugged again tonight and not on wifi, and see what it does. This is an issue though if it is mobile, as I'm often not connected to a network.

Seems like mobile radio active bug, I have the same problem. While mobile data is active, my battery drains with the screen off. I have this issue since v20a and no - factory reset doesnt help at all...