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AOSP ROMs Battery drain (staying awake?)

Hello,
I've been flashing a bunch of AOSP roms and with all of them, i tend to get terrible battery life while idling. I've narrowed it down to my phone not sleeping while the screen is off. In the battery chart menu awake seems to be almost the same as the battery up time and the bar graph is almost a full solid blue. while i was searching i came across a post in cm forums blaming this on something to do with the gps and that disabling it and rebooting would fix it but this does not seem to work for me. Does anyone else have this and has anyone found a way to fix it?
I've also discovered a post whereby someone was running advanced task killer on an sgs2 to fix the same issue i'm having but i would rather not rely on a task killer if i don't need to. Any info, ideas, help, links etc are greatly appreciated!!
Your friendly neighbourhood Spiderman.

So, to narrow things down, I started off fresh
- Flashed stock 1.11 hboot from Telus RUU
- relocked then RUU
- unlocked, flashed TWRP 2.4.4
- Wiped SD, Cache, Dalvik, System, Factory Reset
- Flashed PA 2.54/Gapps (my fave ROM)
- Installed few apps. Friendcaster, Tunein Radio and Swiftkey
- Left it at 60% over night not charging
Low and behold, Awake time and screen on time were almost on par. However, I used it on the bus to listen to some tune in radio, browse the web etc and it seems as though one of the apps or maybe multiple are keeping the phone awake more than it has to be and it started draining again. not as bad as before, mind you. Most likely due to there being less apps. So at this point if I want to continue using AOSP ROMS it seems as though I will need to set up a task killer so nothing keeps my phone awake.
Tonight I will set it up and see what happens with my awake/screen on bars. I am fairly certain they will sync up afterwards. I tried to avoid a Task Killer but it seems as though I cannot! I will post my findings after for anyone else in this same boat though it seems very few are!

Get a program like better battery stats or Gsam battery monitor to tell you what your wake locks are
Sent from my VENOMized HoxL

Battery/Lag issues since replacement & 6.0 update

After my original phone went into bootloops after the marshmallow update, I got a replacement within 1 day (thanks, AT&T, they really surprised me with customer service on this one). Unfortunately, my replacement has been full of issues. For starters, I used to get maybe 1% per hour max battery drain with idle and screen off with location and sync on (would be 97-99% in the morning if it was 100% before sleep), but now it is 5+% per hour, same battery as before, even switching it with my spare, no difference. I have Greenify installed and have a decent number of things greenified, but I don't want to have to also turn off location and sync just to get still worse battery life than I had before. A factory reset did not fix the issue. Google Play Services seems to inexplicably be taking more battery than phone idle now but it is not enough to be explaining this battery issue fully.
Also, I get lag in various applications, including pre-installed system applications. Most noticeably, Chrome and Chrome Beta have the same issue of freezing 3-10 seconds before the page is completely loaded which is an extreme nuisance. Reinstalling the apps and clearing the cache/data did not help. Various system applications run with lag too. I moved some applications to the SD card and the settings app was lagging so terribly it crashed a few times.
Any ideas to my phone woes?

[Q] Weird Battery Drain + Indicator Problem

I'm not sure if it's more appropriate to post here
or on the custom ROM forum itself, but here's my battery issue:
Issue: Abnormally fast battery drain. My battery would
be fully charged, and almost immediately start draining until
it'd show 1% within 2 hrs. Screen would be off mostly (normal
use).
Been on a custom ROM since January 2017 (crDroid) and have had no problems with it since,
except 3 days ago, when the problem first appeared.
Things that are ON: LTE data (or Wi-fi), Auto apps update on
Google Play Store (never been problematic before), Location,
Things that are OFF: Bluetooth, ScreenCast, Caffeine
When I check Battery in Settings, the numbers don't add up.
I'd have battery indicator at 70% for example, but Screen,
Android System, all other apps would add up to only 7%. So
that's a whopping 23% unaccounted for.
But here's the weird thing: it drains fast until 1%, then at 1%,
the phone is supposed to initiate automatic shutdown like it has before.
When this issue cropped up, the phone keeps going for about 6 hours
or so before shutdown is started. Checking Kernel Adiutor occasionally,
I'd see a much slower decrease in voltage which probably reflects
more accurately the power drawdown situation.
Things I've done:
-clear cache (both through File Explorer and TWRP Recovery)
-clear batterystats.bin
-calibrate battery after full charge/discharge (via Root Essentials,
which basically does the same thing as manually deleting batterystat.bin,
if I'm not mistaken)
-Resetting App Preferences via Setting/Battery
None of the above has worked. Any idea what might be wrong?
My device is a Zuk Z1, with a 4100mAh battery. It usually lasts me more
than a day on normal use, but as the attached pic shows, it's at 96%
yet without having used any apps yet, has only 2 hrs of juice left.
I've tried reflashing my ROM, wiping everything including formatting data
yet nothing has worked.
I'm a light user, as I don't play games or watch videos on my phone.
Neither do I use graphics-intensive apps. I haven't used processor-intensive apps
that require constant GPS (like Google Maps, Waze) since then.

Borat38 said:
I'm not sure if it's more appropriate to post here
or on the custom ROM forum itself, but here's my battery issue:
Issue: Abnormally fast battery drain. My battery would
be fully charged, and almost immediately start draining until
it'd show 1% within 2 hrs. Screen would be off mostly (normal
use).
Been on a custom ROM since January 2017 (crDroid) and have had no problems with it since,
except 3 days ago, when the problem first appeared.
Things that are ON: LTE data (or Wi-fi), Auto apps update on
Google Play Store (never been problematic before), Location,
Things that are OFF: Bluetooth, ScreenCast, Caffeine
When I check Battery in Settings, the numbers don't add up.
I'd have battery indicator at 70% for example, but Screen,
Android System, all other apps would add up to only 7%. So
that's a whopping 23% unaccounted for.
But here's the weird thing: it drains fast until 1%, then at 1%,
the phone is supposed to initiate automatic shutdown like it has before.
When this issue cropped up, the phone keeps going for about 6 hours
or so before shutdown is started. Checking Kernel Adiutor occasionally,
I'd see a much slower decrease in voltage which probably reflects
more accurately the power drawdown situation.
Things I've done:
-clear cache (both through File Explorer and TWRP Recovery)
-clear batterystats.bin
-calibrate battery after full charge/discharge (via Root Essentials,
which basically does the same thing as manually deleting batterystat.bin,
if I'm not mistaken)
-Resetting App Preferences via Setting/Battery
None of the above has worked. Any idea what might be wrong?
My device is a Zuk Z1, with a 4100mAh battery. It usually lasts me more
than a day on normal use, but as the attached pic shows, it's at 96%
yet without having used any apps yet, has only 2 hrs of juice left.
I've tried reflashing my ROM, wiping everything including formatting data
yet nothing has worked.
I'm a light user, as I don't play games or watch videos on my phone.
Neither do I use graphics-intensive apps. I haven't used processor-intensive apps
that require constant GPS (like Google Maps, Waze) since then.
Click to expand...
Click to collapse
Have you tried flashing another ROM/going back to stock?

Freewander10 said:
Have you tried flashing another ROM/going back to stock?
Click to expand...
Click to collapse
Not yet. Am going to try an AOSP-based ROM later.
I've been deleting apps piecemeal, but have faile to pinpoint the culprit.
I have almost come to the conclusion that it's the ROM that's problematic.
But if that were the case, why haven't I had the same problem since
when I first flashed this custom ROM months ago;
and why is the problem reappearing when that same ROM is re-flashed now?

OK, I've flashed 3 other ROMs: Citrus-CAF, NucleaROM and stock, and the problem persists.
By doing the above, I've crossed out the possibility of it being the ROM. Neither is it the battery
itself, because it would've shut down by itself at 1%, yet at 1% I can last 6 or 7 hours of light use.
Anyone out there have any idea?

If you get the same results, the battery is trashed. Is it aftermarket?

WestCoastSunset said:
If you get the same results, the battery is trashed. Is it aftermarket?
Click to expand...
Click to collapse
The battery? No, it's the factory original.

It would not be unusual for a battery to fail in a month or two. I've had that happen to a couple laptops where I work.

WestCoastSunset said:
It would not be unusual for a battery to fail in a month or two. I've had that happen to a couple laptops where I work.
Click to expand...
Click to collapse
That would be pretty unusual for reputable companies. If ever it did happen in my case, perhaps it's a lemon batch.
Sadly, I bought this without warranty.

Not really, happens all the time in laptop world. Even with oem batteries.

New phone with no apps added, phone disabled, screen off, drains far too much battery

Hi
I've got a brand new PH-1 and haven't yet had time to set it up properly, only started it up, let it update software and used for an hour or so before testing the idle battery drain.
I haven't installed any apps or changed any settings other than to disable the google app (to prevent it listening for or responding to "ok google"). I tried out the 360 camera, signed in to gmail and browsed a few websites, before charging back to full and restarting the phone before this test anyway.
But leaving it idle with the screen off and with phone network disabled (there's not even a SIM inserted), only wifi on with good signal, it lost 65% battery in under 22 hours. Screen on time was less than five minutes.
Is this a hardware issue I should RMA, or is it considered normal? If this is normal and there's no easy fix, I'll probably end up having to return the phone anyway for a refund, because if it can't even last a day and half in idle there's no way it would last a reasonable amount of time with normal usage.
Any ideas?
Thanks

Since there isn't a sim card installed, try going to airplane mode and then turning WIFI on.
I am getting about 1.2% drain with cell network and wifi enabled along with all my standard apps installed.

On a typical day with 1-2h SOT, I usually have 60-70% battery left at midnight. I'd try to reset the phone, and then testing again - occasionally a system update will end up doing something funny

I left it overnight with airplane mode on, so even wifi was off, and it's a little better but not by much. Screen on time was one minute.
With airplane mode on, screen off, no dodgy apps, the phone really shouldn't be doing anything to drain battery.
I'll try a full factory reset and see what happens.

Just to follow up, a full factory reset seems to have fixed the issue. Even after doing the same things I had done before (connected to wifi, updated, logged in to gmail, etc) the battery now drains at a much more sensible rate.
Very strange that a factory reset made a difference since it was new from the factory when I had the issue, but I guess something strange happened in the update like dsip suggested.
Thanks for the help!

nickwp said:
Just to follow up, a full factory reset seems to have fixed the issue. Even after doing the same things I had done before (connected to wifi, updated, logged in to gmail, etc) the battery now drains at a much more sensible rate.
Very strange that a factory reset made a difference since it was new from the factory when I had the issue, but I guess something strange happened in the update like dsip suggested.
Thanks for the help!
Click to expand...
Click to collapse
That's ? percent normal behavior. Anytime you flash a ROM (new phone =new ROM) you need to wait a bare minimum of a charge cycle (more like three in my experience) before you get the slightest idea what your actual battery drain is going to look like. think of it like breaking in the engine on a new car.
Sent from my mata using XDA Labs

Question My battery drain is insane!

Hello everyone, I'm in trouble.
22 Ultra is simply eating battery at indescribable levels. Yesterday we went on a trip from work, I left my home with 100%. During the day I did not touch the phone, a bit of a camera but beyond that really nothing. My battery was about 40% after about 3 hours, with no screen use at all! On the other hand, a friend at work with Xiaomi came out with 100% and after 3 hours was on 85, and he did touch the phone here and there.
I don't know how that makes sense, and it's no longer clear to me what to do to solve the problem. I debloat, deleted and disabled a number of irrelevant apps but still, the battery is being eaten. How can I solve it? Please help me!

Draining battery so fast, 20% per hour while idle is not normal, so you definitely have a problem.
It looks that there are two possibilities here:
- Battery malfunction
- Some active process in the background that is using lots of processor power constantly.
If battery is damaged / not working properly, the only solution is to replace it. Still, this doesn't look like a case of duying battery.
If you have some persistent process running in the background that you can't get rid of by debloating, it can't be stopped by restarting the phone, and its not visible in the battery usage section, i would say that factory reset is the most effective option here, since you stated that you tried to deal with it in a various ways already.
You could also wait a bit until you get chance to update to OneUI 5 / Android 13, which should solve your problem, if it's software related.
Hope that you will find solution soon

draskome said:
Draining battery so fast, 20% per hour while idle is not normal, so you definitely have a problem.
It looks that there are two possibilities here:
- Battery malfunction
- Some active process in the background that is using lots of processor power constantly.
If battery is damaged / not working properly, the only solution is to replace it. Still, this doesn't look like a case of duying battery.
If you have some persistent process running in the background that you can't get rid of by debloating, it can't be stopped by restarting the phone, and its not visible in the battery usage section, i would say that factory reset is the most effective option here, since you stated that you tried to deal with it in a various ways already.
You could also wait a bit until you get chance to update to OneUI 5 / Android 13, which should solve your problem, if it's software related.
Hope that you will find solution soon
Click to expand...
Click to collapse
I want to keep the factory reset as the last option....
Every single app that I don't need at the background I disabled from running in background.

Deleted

maor23 said:
I want to keep the factory reset as the last option....
Every single app that I don't need at the background I disabled from running in background.
Click to expand...
Click to collapse
Try to wipe your system cache.....it won't do a factory reset but might solve the issue while keeping your phone as it is.
Volume UP button along with the power button until you see Android screen
Scroll down with volume down until you reach wipe system cache and reboot
sometimes, it won't show up while you press the buttons....in that case, connect your phone to your PC/Laptop with any USB C cable and then do it.
Second solution, you can try Samsungs App Booster.....get an apk from the net. It generally helps as well.