Database Develop

[Q] Battery ?'s

Hi i have a battery problem, it dies really fast when im not using it and when i am it dies faster, idk now if its just me but ive tried it with paragon, serendipity, and the stock rom with the same problem. heres some of my phones info..
today i used it for about 20 minutes at once on the internet and music on 3g.
-from 6am to 7pm 25% with about 30mins of total use??!!!
-wifi and gps off
- only using 2 widgets
-brightness off
-im currently using pararagon...
is this normal or is there a way to fix this problem??
Thanks, Miguel

mac3194 said:
Hi i have a battery problem, it dies really fast when im not using it and when i am it dies faster, idk now if its just me but ive tried it with paragon, serendipity, and the stock rom with the same problem. heres some of my phones info..
today i used it for about 20 minutes at once on the internet and music on 3g.
-from 6am to 7pm 25% with about 30mins of total use??!!!
-wifi and gps off
- only using 2 widgets
-brightness off
-im currently using pararagon...
is this normal or is there a way to fix this problem??
Thanks, Miguel
Click to expand...
Click to collapse
No, not normal. I get home with like 55-60% battery left with
12 hours standby
1-1.5 hours calls
1-1.5 hours with activities that keep screen on like texting, mails, etc
i am on the ROM in my signature.

ok is there anyway to get reduce the battery drain without changing roms if not whats the best rom for battery life??

mac3194 said:
ok is there anyway to get redude the battery drain without changing roms if not whats the best rom for battery life??
Click to expand...
Click to collapse
Try using a kernel that supports UV and setting slightly reduced voltages. I am using GB's 1280 kernel, and capped the speed at 1000. And reduced the voltages slightly.
Others would be normal things like switching to EDGE, lowering brightness levels, setting wifi to "turn off when screen off", etc.

what does UV mean sorry im a newb :/ and how do u install a different kernel

mac3194 said:
what does UV mean sorry im a newb :/ and how do u install a different kernel
Click to expand...
Click to collapse
UV = Under volting

1. Load the kernel in my signature (attached to this post)
2. Install the voltage control app (attached to this post)
3. Start the voltage app and set the voltages and cap at the levels based on the pic in this thread.
WARNING: Voltage levels depend on phone to phone. I would suggest starting from low values. Take off 50 from the values I have posted in the pic and use them. If u feel it is ok, then add another 25. Take it slowly checking if the reduced voltages are freezing up ur phone.
I would recommend u starting with these values: 75 75 50 25 25 0 from bottom to top.

Ok thanks diablo I will test this out tomorrow and report back
Sent from my SAMSUNG-SGH-I897 using XDA App

Yesterday I got little improvements.only like 5% though but now I am using paragon 4.0 so I will give it another shot...
Sent from my SAMSUNG-SGH-I897 using XDA App

try cognition 3.04 with it on standby (using juice defender, i like it, you may not...) i drain about 1% every 1.5 hours. the battery life is unbelievable

mac3194 said:
Yesterday I got little improvements.only like 5% though but now I am using paragon 4.0 so I will give it another shot...
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
What is ur idle drain? Mine has like 1% for like 1.5-2 hours.

mac3194 said:
Hi i have a battery problem, it dies really fast when im not using it and when i am it dies faster, idk now if its just me but ive tried it with paragon, serendipity, and the stock rom with the same problem. heres some of my phones info..
today i used it for about 20 minutes at once on the internet and music on 3g.
-from 6am to 7pm 25% with about 30mins of total use??!!!
-wifi and gps off
- only using 2 widgets
-brightness off
-im currently using pararagon...
is this normal or is there a way to fix this problem??
Thanks, Miguel
Click to expand...
Click to collapse
Sounds like a good old battery recalibrate is in order:
1. Connect the phone to the charger with the phone powered on, and allow the phone to charge until it shows 100%
2. Disconnect the phone from the charger, and power it off.
3. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the battery indicator shows 100% (you can use vol-up/vol-down to make the indicator come back up when the screen goes to sleep).
4. Disconnect the phone from the charger and power it on.
5. Once the phone is powered completely on, power it off again and reconnect it to the charger until the battery indicator shows 100%.
6. Disconnect the phone, power it on, and use it.
I did this a couple days ago, plus wiped stats, and as of right now, I am showing 20% after 30 hours. No joke.
Running Cognition 3.04,

juice defender is amazing!! it helped my battery so much!!! thanks a lot!!!

Try searching google / this forum for a post of resetting battery stats, i need to do that also since my battery life isnt all that good either, especially how im running 3.04 cog and everyone says batt. life is amazing. SO if anyone can link to battery reset post that would be amazing.

mac3194 said:
juice defender is amazing!! it helped my battery so much!!! thanks a lot!!!
Click to expand...
Click to collapse
Ironically, JuiceDefender killed my phone *much* faster than with me manually enabling and disabling my data connection.
IMO, JuiceDefender does nothing that you can't do yourself, the problem is, is that it constantly has to check apps to see if any are enabled to toggle your data connection.

I am just saying
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I actually use my phone and I am getting these results

I have a very similar question. My problem is, on custom roms (I've tried Assonance, Serendipity, and another), my battery drains 1%/hour. This is even after a fresh install; nothing is running in the background. When I look into my battery info, it says wifi is doing the draining. I keep hearing people saying their battery life is amazing after flashing custom roms, but I'm getting the complete opposite. Am I forgetting something?
Without custom roms or anything, and using a rooted/lag-fixed (not sure this makes any diff anyway) setup, I lose somewhere between 2-3% battery per hour on standby. I don't even use juicedefender. I really love what they're doing with these custom roms, but the wifi on standby just rapes my battery.

Milkshakes00 said:
Ironically, JuiceDefender killed my phone *much* faster than with me manually enabling and disabling my data connection.
IMO, JuiceDefender does nothing that you can't do yourself, the problem is, is that it constantly has to check apps to see if any are enabled to toggle your data connection.
Click to expand...
Click to collapse
+1 why have an app probe for stuff that u can do for urself. Little things like remembering to turn off wifi when not in wifi zone would help u extend ur battery.
Sent from my SAMSUNG-SGH-I897 using XDA App

Set wifi sleep policy to off while screen is off

i dnt even use wifi and after 5hrs of use my battery is at 74% which is good enough for me but i wouldnt mind 1 day+ of battery life... how do u do this??

[Q] My Friends Galaxy S is going flat in 24h without using it? Any ideas?

My friend is having problems with her galaxy s battery going flat even when not in use in about 20h (without using it.)
Any ideas
I checked for running aps
What might i try
Or is the battery faulty?
Can you help

it is normal if you enable data
Sent from my GT-I9000 using XDA App

yup it's normal

cheers for the replies.... but i don't understand them
what does she have to do?
I have the same phone, and make phone calls and surf the web and still have more battery in the evening.
her phone is just in her bag all day?

galaxy44 said:
I have the same phone, and make phone calls and surf the web and still have more battery in the evening.
Click to expand...
Click to collapse
What apps does she have installed which you don't?
For example, if she uses the Facebook/Twitter apps and they're updating themselves every 10 mins as opposed to every hour (or even manually) then her battery will get eaten alive!

PrinterElf said:
What apps does she have installed which you don't?
For example, if she uses the Facebook/Twitter apps and they're updating themselves every 10 mins as opposed to every hour (or even manually) then her battery will get eaten alive!
Click to expand...
Click to collapse
i think she has a facebook app i'll check whats different to my phone.
Also I installed a few battery type app to see if things are different on her phone.
Any other ideas suggestions welcome

Do check the running services!
Check what services are running!

AlexAlien1966 said:
Check what services are running!
Click to expand...
Click to collapse
how do i do that? in the task manager?
I also turned the sync to her facebook app to 'never' .

Turn GPS off when not needed and WiFi when not needed that usually helps. Also when wifi is on turn off notify me about new networks. Make sure screen brightness is set to automatic also.

if she has live wallpapers thats a bad ideea for a lasting battery, live wallpapers use cpu.. cpu user electricity, and the battery gets empty really fast. i`m runing ~ 40hours with nonstop wifi or data mode activated, depends on my locations, 1 push email runing 24/7 skype 24/7 and i talk for about 10-30 min per day... so... install cpu temp v2 and uncheck the screen timeout (set it to 10 minutes) and let the phone on the table and look at the cpu tempv2 if the cpu drops to 1-5 % @100mhz , if it doesn`t drop below 10 percent @100mhz then you have some nasty apps that are not idle.

if im in an area where i get 5 bars i can get more battery life while using my phone for a while, than I would if I am in an area where i get no connection or an area where my connection is constantly dropping. This is because the phone constantly tries to connect to the service provider and uses up tons of battery doing it.

galaxy44 said:
I also turned the sync to her facebook app to 'never' .
Click to expand...
Click to collapse
Perhaps a bit early to tell, but has it made any difference?

galaxy44 said:
how do i do that? in the task manager?
I also turned the sync to her facebook app to 'never' .
Click to expand...
Click to collapse
Go to Settings -> Applications -> Running Services and check what is shown.
(Switched my phone to English language to ensure the names above are correct). Do the same if your language is not English and you are still worried.
Cheers
Alex

galaxy44 said:
My friend is having problems with her galaxy s battery going flat even when not in use in about 20h (without using it.)
Any ideas
I checked for running aps
What might i try
Or is the battery faulty?
Can you help
Click to expand...
Click to collapse
I have 2 days battery life with medium usage, download a stripped rom and keep it basic on the widget/wallpaper/amount of apps.
Download damiangto 1.2 gold underclock to 800 mhz (or keep it at 1000 mhz, but it doesnt change so much in speed for me)
undervolt by steps. as long as your phone doesnt die in sleepmode you can go lower. Im undervolting at -100 without any problems.
Download superpower or juicedefender. I have good experiences with both, using superpower at the moment and its free and good.
black backgrounds and themes are better for battery life because of the Super AMOLED screen.
You dont have to totally discharge your phone before charging it, charging whenever possible is actually better for long term battery life.
Hope this helps

Thanks for the replies everyone
I'l check all of the information out
I installed
Battery mix (has discharge graph)
Smart battery
Battery eta (has Discharge rate)
I swapped batteries with mine (hers still discharged too fast)
annoyingly it mucked up the battery discharge statistics because my battery was full when i put it in her phone.
She doesn't really muck about with her phone, very few apps or wallpaper etc.
I just go crazy with mine.
my battery discharge (with loads of use see CPU graph)
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her battery use (phone was in her bag not used all day at work)
she was in a different location to me. see no CPU activity either
I looked in running services
mapslocationfriendservice (latitude) was 26% mine was about 9
and android system was higher on her phone
I mucked about unnistalled and installing maps using market and titanium backup
also I installed OCLF on her phone (one click lag fix) because it is on my phone. also the battery apps were slowing it down.
In short
her battery is plummeting about 3 hour if its in use and 11 in standby
its not the battery
i think is something to do with the android system.
probably latitude
but i could be wrong
I'll have another crack at it later.
Worst case i could master reset and restore titanium backups of her texts and contacts and stuff. but I like to sort it out
Cheers for the advice, I'll check it all out.
I'll post back if there any change in the situation

quick update
Her phone appears to be running better
I think it was google maps latitude update.
I cant 100% be sure.
but the result of the stuff i tried on the above post seemed to have changed her phone from the poor performance it suddenly started getting.
I am thinking of trying out 'superpower' and or 'juicedefender' on mine and her phones in the future.
Thanks for the tips everyone

Pretty good battery life!

I'm seeing a lot of posts about poor battery life but am i the only one who's getting pretty damn good results?
I'm currently on 2days, 18hours, 31minutes and 41seconds on battery* and it's still on 31%. I reckon i can still probably get another 24 hours out of it.
Is anyone else getting similar results?
* Roughly: 5 phone calls, 20+ texts, 40+ minutes of youtube via HDMI out, 5 photo's (some with flash) and internet/market browsing here and there.
I'm running CM7 with vorkKernel (standard clock speed) with GPS turned off and WiFi on (when at home),

that kernal you are using. does it show accurate battery stats? I noticed cm7's battery is pretty erratic.
btw this is xthedarknight99 on twitter!

My battery life is great when I use JuiceDefender and when I don't use apps that use the mobile data connection the entire time.
My battery gets raped to hell and back when I have apps running that use mobile data, like MSN or IRC. I work 4-hour shifts and during a shift I usually leave MSN running using 2G data. In those 4 hours I lose around 40-50% of my battery, it's wicked.
One thing I've noticed is, when I enable Wi-fi and leave it enabled, battery drain overnight is around 8%. When I disable Wi-fi AND Mobile data and let JuiceDefender enable mobile data for a short time every 15 mins, my battery drain overnight is around 10%. If I leave mobile data enabled the entire time my battery loses 30% overnight.
Something is seriously wrong with the mobile data chip/driver.

hazard99 said:
that kernal you are using. does it show accurate battery stats? I noticed cm7's battery is pretty erratic.
btw this is xthedarknight99 on twitter!
Click to expand...
Click to collapse
Not sure. The battery stats may be off slightly but it's been well over 2 days since i last charged my phone
here's the screenshot i took a few hours ago.
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EDIT: Accidentally put 12 hours instead of 18 in the first post ><

Tr0gledyte said:
My battery life is great when I use JuiceDefender and when I don't use apps that use the mobile data connection the entire time.
My battery gets raped to hell and back when I have apps running that use mobile data, like MSN or IRC. I work 4-hour shifts and during a shift I usually leave MSN running using 2G data. In those 4 hours I lose around 40-50% of my battery, it's wicked.
One thing I've noticed is, when I enable Wi-fi and leave it enabled, battery drain overnight is around 8%. When I disable Wi-fi AND Mobile data and let JuiceDefender enable mobile data for a short time every 15 mins, my battery drain overnight is around 10%. If I leave mobile data enabled the entire time my battery loses 30% overnight.
Something is seriously wrong with the mobile data chip.
Click to expand...
Click to collapse
Yeah, Wifi uses a lot less power than 3G when it's connected but uses a hell of a lot of power if it's constantly scanning and can't connect. I always turn mine on when i get home and turn it off when i leave the house

Noticed the same thing too. But less acutely, as I don't use any apps that use data constantly, except for an hourly email check.
Similarly, wifi at home seems to have slower drain than 3G mode when I am outdoors (wifi switched off when outdoors). I don't use 2G mode.
Generally, I stay above 50% battery level after a whole day's use - so I can't complain too much.

Finally plugged my phone in lol
Not got a screenshot of it but the stats are: 3days, 6hours, 17minutes and 49seconds on battery. Not bad!

Mine did something "bad" like this too. 3d 5h... never imagined, after the problems it makes day to day...

You lucky bugger! Ive actually had time to test it in the wild(slightly) today and well its not good at all!
5hours 20minutes or something around that, phone actually drained 99% lol! In that time i did:
almost 2 hours of browsing web, forums like hexus/xda so nothing to heavy... no constant loads/refreshes
Played 10-15minutes of xconstructor (im so easily pleased!)
Had 2 gmail accounts of auto sync, push basically
made around 27minutes worth of phone calls
5 texts
Not much really to drain 100% battery . Any ideas on how to improve battery life?
edit: this is on modaco fr18b2

@meltus.... do you mind me asking whether you're on stock rom or what apps etc you have changed to get that. I'm getting a healthy 24 hours for the battery normally but wouldnt mind extending that!!

Did you try to recalibrate the bettery with batterycalibration app? For me it basically doubled the battery life!

i recalibrated the battery before installing a new rom (it was 100% battery) however ill try again .

Meltus do you have sync on?
Also do you use whatsapp?
Those are the #1 battery killers on my phone.
Specially whatsapp.

I can't understand how your battery can last so long, while mine last less than a day ...!!!

Meltus said:
I'm seeing a lot of posts about poor battery life but am i the only one who's getting pretty damn good results?
I'm currently on 2days, 18hours, 31minutes and 41seconds on battery* and it's still on 31%. I reckon i can still probably get another 24 hours out of it.
Is anyone else getting similar results?
* Roughly: 5 phone calls, 20+ texts, 40+ minutes of youtube via HDMI out, 5 photo's (some with flash) and internet/market browsing here and there.
I'm running CM7 with vorkKernel (standard clock speed) with GPS turned off and WiFi on (when at home),
Click to expand...
Click to collapse
That is impressive
May I know which nightly build are you on?
I've always been tempted to install them but i was too afraid of stability issues

that is indeed impressive. my battery gets merked by approximately 33% after 40 minutes of youtube lol

I have almost the same battery life on the latest CM kang, but with 2G only... With 3G I get little more than one day...

I think he's pulling our leg with that screenshot
No details of rom, baseband or ril combo etc.
-smc

hicks12 said:
You lucky bugger! Ive actually had time to test it in the wild(slightly) today and well its not good at all!
5hours 20minutes or something around that, phone actually drained 99% lol! In that time i did:
almost 2 hours of browsing web, forums like hexus/xda so nothing to heavy... no constant loads/refreshes
Played 10-15minutes of xconstructor (im so easily pleased!)
Had 2 gmail accounts of auto sync, push basically
made around 27minutes worth of phone calls
5 texts
Not much really to drain 100% battery . Any ideas on how to improve battery life?
edit: this is on modaco fr18b2
Click to expand...
Click to collapse
I lost 3 or 4% in one hour on standby with Modaco fr18b2. Now on CM7 kang I have still 100% after 8 hours on standby. Data-2G and Wi-Fi are turned on all the time.
Well settings are the same as with Modaco ROM.

I want to flash CM so bad but am waiting to see what the official gingerbread does.. I know that once I go to CM I won't go back lol my battery is horrible right now
Sent from my LG-P999

[Q] Weird "battery drain" when lightly using the phone

Hello !
I just bought my P880 two days ago and everything is great except one thing: battery drain. It is not occouring in background when phone is in Deep sleep, it doesn't lose charge while it's sleeping, but when I just unlock it/start using it, it just starts draining.
I have rooted it, and unrooted using SuperSU. The thing is I haven't experienced that kind of drain yesterday, it was working fine except drain caused by bad signal (badly inserted SIM).
Usage by Android System is at 50% over 5 hours, Screen is at 9%. Awake graphs are the same as Screen on graphs- no wakelocks.
I have these apps installed:
Prey Anti Theft
Skype (not running)
Adobe Reader
SoundHound
Disco Light
QR Droid
Sygic (not running)
X-plore
SwiftKey 3 keyboard
WiFi, GPS, Data, everything turned off except mobile signal
Running Internation version with Android 4.0.3, Kernel 2.6.39.4-00001-g0f9182c
Mobile network type is EDGE:2 with mobile signal -70dBm
I'm first time android user and this is my first problem so I tried to include as much info as possible.
Thanks in advance

I see 2 mayor issues, first is the android deft app, it may be running and trying to sync but bcz the data is off it will try to connect foreva.
Also, edge is (in other words) ROAMING and this forces the antenna to use more power to get signal from another provider, it get worst if you have a phone with sim card.
Sent from my LG-P880 using Tapatalk 2

Gildegan said:
I see 2 mayor issues, first is the android deft app, it may be running and trying to sync but bcz the data is off it will try to connect foreva.
Also, edge is (in other words) ROAMING and this forces the antenna to use more power to get signal from another provider, it get worst if you have a phone with sim card.
Sent from my LG-P880 using Tapatalk 2
Click to expand...
Click to collapse
Thanks for pointing that out, but I have disabled every sync and I have set phone to 2G mode only, the reason is that UMTS signal was low and was draining battery even more.
I am only losing sharge when just doing random things on phone, even if that means only adding/removing widgets/apps on main screen with WiFi off.

Then you must try the Deodexed version of v10f, removing the bloatware with the script in the same thread.
The issue may be some lg apps that are running in the background so doing this will have 6 hours in standby time with 100% still, like me (if I turn all radios off ).

I have just woken up, while sleeping (9h) phone was awake for about 50%, no wakelocks but there were 30 alarms from Android/Google maps ans 29 alarms from com.google.android.gsf
Hope this helps.
I may try custom ROMs if nothing else works.
While typing this message I have lost 7%.

Similar state here as the OP. Got the phone two days ago.
All is good, it rooted OK, Directory Bind works fine, phone runs like hell (about 10 times faster than my old Galaxy S) BUT it drains battery like a genuine power guzzler.
Ok I get that according to the performance you get, it comes with an accordingly high power draw, so I don't ***** about it, I just want to know if this is normal. I mean I played 2 hours and 15 minutes of Sprinkle and the battery died, starting from a full charge. Screen was set at 50%.
GPS is off, Bluetooth is off, no 3G mobile network and screen is at 50% brightness as I said. There's an NFC icon on the notification bar next to the battery icon, which I am not sure if it should be there.
Here are a couple of shots from the battery section of the phone and from Battery monitor widget if these help.
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Please note that as the OP said, the phone consumes nearly nothing when idling. Firmware is 10f.
PS I am not trying to hijack the OP's thread. I just noticed the same behavior and I'd like some help on the same matter, as well as to contribute in whatever way I can. If the OP is offended somehow, I will gladly start a new thread.

@psolord No, not offended at all. I'm glad you posted actually.
My phone has encountered 20 more Alarms, wake ups since I left it standing:
com.google.android.apps.maps Wakeups: 50
com.google.android.gsf Wakeups: 45
You can see pictures below, the drop on the second picture happened when I was writing me previous post from P880.
- I am also rooted again (after factory restore)
- I have reenabled 3G networks but the signal is only at about 50%.
Any additional info please ?

Ok buddy, so we can keep discussing it here together.
For the matter at hand, I see the same behavior, when I unlock the screen, it's like I have opened a whole in the battery.
It dropped from 85% to 65% just from downloading a new map (500MB, 20min download on a slow wifi) from Sygic downloader. I mean this can't be right, right?
I also checked cpu spy and it reports the system 75% at deep idle, 15% at 51Mhz and the rest are 0% to 1% up to 1500Mhz. So if the cpu has so little operation, what on earth is draining the battery?
I wonder if we could be looking at a bad battery batch.
Is there an app that reports exactly what activity consumes power and how much?

Indeed, the hole in the battery.
I even restored to factory from recovery mode since I screwed up the root, so it was just stock, but guess what, nothing has changed :crying:
I really hope this can get fixed, else I'll get a replacement.
I hope someone from this forum with more experience can help :/

I think I am onto something.
Can you please check how is the phone doing if you disable everything under location and services?

psolord said:
I think I am onto something.
Can you please check how is the phone doing if you disable everything under location and services?
Click to expand...
Click to collapse
I am going to try this, I am also talking to LG Support right now. WIll let you know when I get more information.

I disabled everything, and I didn't see pretty much any improvement. LG Support suggested me to return the phone.
Pretty much draining the battery atm so I can charge it back to 100% and use something like Battery Calibration. Maybe it can change something.

Yeah indeed I was onto nothing. Nothing changed for me either.
Playing 30mins of a 720P resulted my battery dropping from 62% to 50%. I also used the gps for the first time with Sygic (Jesus even the GPS is lightning fast) and the battery went from 50% to 30% for a 20 minute ride. It seems that my phone cannot give me more than 2 hours of use. That's just silly.
BTW do you or anybody, know of an app that can show battery usage per app?

psolord said:
Yeah indeed I was onto nothing. Nothing changed for me either.
Playing 30mins of a 720P resulted my battery dropping from 62% to 50%. I also used the gps for the first time with Sygic (Jesus even the GPS is lightning fast) and the battery went from 50% to 30% for a 20 minute ride. It seems that my phone cannot give me more than 2 hours of use. That's just silly.
BTW do you or anybody, know of an app that can show battery usage per app?
Click to expand...
Click to collapse
Stock application ?
Also you can use Better Battery Stats to see if there are any wakelocks or anything is waking up the phone etc.

What is happening right now is rather strange, I disabled screen turning off (trying to drain battery to 1%/2%) looking at stock battery app, it seems to be stuck at 21% and it's not changing.

The stock application does not do so much analysis, but the batterystats you used above seems more like it.
I am getting panicked and I miss some stuff haha. Ok lets cool.
It makes me sad that we don't get any input from the community. Something like "yeah this is normal, live with it" or "your phone is faulty, take it back to the shop for a replacement" or something.

Agreed, ANY, ANY kind of input would be appreciated, but I guess we are getting none.
I am going to fully charge it today, do some stuff and report back tommorow. Also anyone, please do post any suggestion you may have.

shiinkotheone said:
What is happening right now is rather strange, I disabled screen turning off (trying to drain battery to 1%/2%) looking at stock battery app, it seems to be stuck at 21% and it's not changing.
Click to expand...
Click to collapse
Maybe this has to do something with the built in power saver. Maybe it kicks in when the battery drops to the 20s and stops whatever is draining it.
I am thinking trying some battery saver to see if it does the same thing but from the beginning of the full charge.

psolord said:
Maybe this has to do something with the built in power saver. Maybe it kicks in when the battery drops to the 20s and stops whatever is draining it.
I am thinking trying some battery saver to see if it does the same thing but from the beginning of the full charge.
Click to expand...
Click to collapse
Actually I have disabled it when it asked me if it should turn on. So I guess nothing to do with that.

I am going to backup now, fully unroot and somehow get it to pure stock. Than I'm probably going to exchange the phone in case battery life doesn't change.

Poor battery performance, what to do?

Hey guys, I'm wondering what can I do to improve my Note 8 battery life. Seems to me that is draining and I do not get the chance to use it too much. Maybe you have an idea how to optimize and track the apps are overusing the battery, so far I was not able to detect which app/component drains my battery. Even Samsung seems that doesn't know since there is no message regarding background processes with heavy usage.
Basically I finished fully charging at 9:15 AM and now 16:15PM time I started to write the post and make the screenshots, it has 16%. What I did all this time with the phone, was:
- a bit of browsing,
- make one NFC payment,
- have the S3 gear connected on bluetooth.
- few twitter messages and viber really small usage. (less than 40 messages overall)
So here are my settings
- WIFI is off and I'm using 3G connection (I stopped LTE thinking that requires more battery.. , correct me if I'm wrong please),
- screen not even on 50% and auto brightness off (using HD+ and a dark theme, everything is so dark!)
- AOD
- no led, no gestures (most of them I turn off for testing purpose)
- Medium battery saver on.
- No phone calls
- few notifications (not more than 20, also the notification is optimized to apps I'm concerned)
Any suggestion how to make it to end of working day .. at least?
I was waiting so long for a new note and now I'm a bit disappointed and I hope that is something I do wrong..
Funny is I just realized that by mistake I put the phone on airplane mode while making the screenshots, still percentage was flying away even like this. I lost 2% making screenshots in a matter of couple of minutes.
Please find the screenshots attached in the link down bellow, were to big to add them to the post.
https://drive.google.com/drive/folders/0B7hYWRFdyQqPOFp3alVYNUxJUW8?usp=sharing
Thanks!

you might have some apps draining battery. I'm used to a rooted phone, so I'd always check with wakelock detector, but I'm not sure what you can do without installing an app as a system app.
Try factory resetting your phone and using it without installing anything for a day and see what the battery life is like. If it's significantly better, install your apps 1 by 1 until you find out which one is causing unnecessary cpu cycles or wakelocks.

Quiksmage said:
you might have some apps draining battery. I'm used to a rooted phone, so I'd always check with wakelock detector, but I'm not sure what you can do without installing an app as a system app.
Try factory resetting your phone and using it without installing anything for a day and see what the battery life is like. If it's significantly better, install your apps 1 by 1 until you find out which one is causing unnecessary cpu cycles or wakelocks.
Click to expand...
Click to collapse
But I wonder, I shouldn't see the heavy usage on the battery info page? Like which app does most of the usage and time spend in the background or CPU?

I had excessive battery drain, about 10-11% an hour with every off . A full factory reset cured the problem.

What's your screen on time usage? 5-6 is probably the normal amount you would get with most phones (This is the most important thing if nothings draining the battery). And yes, it seems you might need a factory reset.

Raklik said:
But I wonder, I shouldn't see the heavy usage on the battery info page? Like which app does most of the usage and time spend in the background or CPU?
Click to expand...
Click to collapse
You won't always see this as it could be a byproduct causing a kernel wakelock.
Either way, something is acting incorrectly. The only way to really figure it out is to start over and try things slowly till you find out what it is.
For instance, on my nvidia shield tablet k-1, I was getting horrendous battery life on every single rom, stock or AOSP/Lineage. I found that I was getting 30% wakelock killing ~20% battery life per day when it should be sub 5%. I found that wifi was causing these kernel wakelocks and setting wifi to be disabled with the screen off unless charging fixed the issue entirely.
Now, that anecdote likely has nothing to do with what you're experiencing, but note that you can usually find out what's wrong from trial and error.

I've had my note 8 for 6 days now, and battery life is excellent, i mean i have wi-fi and 4g lte on all the time, bluetooth on all the time, sync with 3 emails, Facebook, weather widget, weather screen refresh every 30mins, location high accuracy, edge lighting, aod schedule 7pm-7am, was 100% at 6am, played games on it lots, used the phone 2x, 1 hour call and a 30 mins call, text messages, it's 130pm and I'm at 55%, try a factory reset then log in to your gmail then just try to update the phone if there is any. Then reboot then start installing your apps. If it doesn't work call carrier customer service and complain about the battery not holding up like some people you know who has note 8. They might replace it with a new one.
Sent from my SM-N950U using XDA-Developers Legacy app

herandy said:
What's your screen on time usage? 5-6 is probably the normal amount you would get with most phones (This is the most important thing if nothings draining the battery). And yes, it seems you might need a factory reset.
Click to expand...
Click to collapse
Phone died 15-20 minutes after I did the screenshots, so a bit more than 2 hours...
So.. yeah.. I will try a factory reset and start install all the apps bit by bit and see which one causes the troubles.. hopefully is nothing more than that.

Did you restore a backup or did you load your apps fresh from the play store?
I've had horrible luck with issues like battery life restoring from backups. I always install apps fresh.

douger1957 said:
Did you restore a backup or did you load your apps fresh from the play store?
I've had horrible luck with issues like battery life restoring from backups. I always install apps fresh.
Click to expand...
Click to collapse
I did a google restore from backup! Damn! And I was thinking that I should maybe to a clean, one by one app install.

My battery life is also not great but im using full resolution and when i remember time when i got S6 edge on launch....the battery was horrible but after few updates it was perfect so stay strong and wait a bit

jirka607 said:
My battery life is also not great but im using full resolution and when i remember time when i got S6 edge on launch....the battery was horrible but after few updates it was perfect so stay strong and wait a bit
Click to expand...
Click to collapse
can you translate "not great" in hours? :laugh: Because I will say that mine is second after horrible.. with update done.
I will start the reset in a short while and I will test it tomorrow with minimum apps installed.. those which I really must have in a working day..

Maximum 5 hrs on wifi normally about 3-4 battery is not great on note yet....some optimalization would be nice

I use Ampere to monitor the instan drain of current. In a quiet situation (screen on, internet or tapatalk browsing, gear connected, wifi and data turned on) you should have something 200 mA drain.
Inviato dal mio SM-N950F utilizzando Tapatalk

Maybe some of the settings changes you're making are somehow rendering your phone less efficient.
I have the USA unlocked version and use it as it came without changing to a dark theme or turning anything off and the battery life is much better than yours.

douger1957 said:
Did you restore a backup or did you load your apps fresh from the play store?
I've had horrible luck with issues like battery life restoring from backups. I always install apps fresh.
Click to expand...
Click to collapse
I restored from a helium backup. My battery life wasn't good for about a week but it did last all day down to 20-30% at the end of the day. After a week it has improved maybe due to apps updating. Now I'm at 70-80% at the end of the day with moderate use. I have disabled several apps I didn't need as well.

Seems like it's hit or miss with the battery life. I see a lot of people happy and some are having problems. Hopefully Samsung might push a update to help.

Get cpu spy and verify that your devoce is going into deep sleep when off(mine wasnt at first until i froze/removed some rouge apps). Install accubattery and do a benchmark and see how your battery does. At least do 6 discharge cycles first to see an average. Also, in device maintenance, you can make all apps doze when not being used now.. this is a new feature. Add all of your apps and they get put to sleep immediately. I get 8 hours SOT this way
Sent from my SM-N950U using Tapatalk
---------- Post added at 09:11 PM ---------- Previous post was at 09:09 PM ----------
Raklik said:
Hey guys, I'm wondering what can I do to improve my Note 8 battery life. Seems to me that is draining and I do not get the chance to use it too much. Maybe you have an idea how to optimize and track the apps are overusing the battery, so far I was not able to detect which app/component drains my battery. Even Samsung seems that doesn't know since there is no message regarding background processes with heavy usage.
Basically I finished fully charging at 9:15 AM and now 16:15PM time I started to write the post and make the screenshots, it has 16%. What I did all this time with the phone, was:
- a bit of browsing,
- make one NFC payment,
- have the S3 gear connected on bluetooth.
- few twitter messages and viber really small usage. (less than 40 messages overall)
So here are my settings
- WIFI is off and I'm using 3G connection (I stopped LTE thinking that requires more battery.. , correct me if I'm wrong please),
- screen not even on 50% and auto brightness off (using HD+ and a dark theme, everything is so dark!)
- AOD
- no led, no gestures (most of them I turn off for testing purpose)
- Medium battery saver on.
- No phone calls
- few notifications (not more than 20, also the notification is optimized to apps I'm concerned)
Any suggestion how to make it to end of working day .. at least?
I was waiting so long for a new note and now I'm a bit disappointed and I hope that is something I do wrong..
Funny is I just realized that by mistake I put the phone on airplane mode while making the screenshots, still percentage was flying away even like this. I lost 2% making screenshots in a matter of couple of minutes.
Please find the screenshots attached in the link down bellow, were to big to add them to the post.
https://drive.google.com/drive/folders/0B7hYWRFdyQqPOFp3alVYNUxJUW8?usp=sharing
Thanks!
Click to expand...
Click to collapse
You dont have to use med battery saver either, just read my reply on this thread and you will be good. You may have to experiment a little to get your device to go into deep sleep when screen off. Mine didnt at first. Its on my other comment
Sent from my SM-N950U using Tapatalk

I got back from work and my phone was at 75% that's between 9:30am and 6:30 pm. So my battery life is pretty good. I lose about 5% overnight.

I average 7hrs screen time Got 8hrs yesterday
Sent from my SM-G955U using Tapatalk
---------- Post added at 12:53 AM ---------- Previous post was at 12:50 AM ----------
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