[Guide]Android System/OS Battery Drain FIX

[Nishidh]

After Installing Custom Mods and rooting on Oxygen OS I was experiencing a Android System battery Drain .
Also in custom Roms based On OOS I also had the same problem.
I was draining 35-40 percentage of my battery in a charge cycle.
I searched alot past 2-3 days on my phone to see which process is causing this Drain problem.
I found many but stoping them didn't fix it .

Finally today when I found that after SuperSU was installed
It was causing the Drain so I found a fix for this

Fix for all Roms having this problem
-Go to SuperSU app
-Settings menu
-Enable trust system User
-and enable grant permission during boot
-Then put the phone on flight mode and wait for it to cool down.

If this doesn't work
-Try setting default access to grant
-Enable MultiUser access

Hit the thanks button if this helps
Also tell me if this helps in the comments
Remember to follow all steps

Original Post here
https://forum.xda-developers.com/showpost.php?p=71082541&postcount=72

 

[JonatasSfredo]

Testing ... I post the result at the end of the cycle.

 

[DrunkenDragon]

Doesn't work still battery drain and phone always warm

Sent from my ONEPLUS A3003 using Tapatalk

 

[silentvisitor]

@Nishidh
Thanks for sharing but both solutions are security risk. Maybe Magisk is solution till SuperSu is fixed (hoping that it IS the culprit).

 

[Wh4tTh3Fcuk]

Doesn't work still battery drain and phone always warm

Try to delete all of the mkv files. That helps for me. No battery drain at all

 

[sahed01]

i would say "kindda" help. cause still android system drains. but, a bit less then before. i would like to see some more days.

 

[silentvisitor]

I switched to Magisk and drain is still there so reason is something else seemingly. It has something to do with FW/Modem. We all need to deluge OnePlus with requests to fix this mess.

 

[Nishidh]

Helps me

My current battery cycle

 

[noisy_lightning]

For me clearing the Google Play Services database solved the battery drain.

Apps,
Google play services
Storage
Manage Space
Clear all data

I then remained on that screen and restarted the phone into recovery without returning to the launcher.

In recovery clear cache only.

Reboot

Since then I have had no problems at all (though I am running complete stock no root)

No data is lost but you will have to add cards to android pay and set a couple of other items when prompted (like default backup account etc).

Sent from my ONEPLUS A3003 using Tapatalk

 

[MrWilsonxD]

I mean no disrespect to the OP when posting this..

Isn't setting default root access to "grant" a crazy big security risk? Potentially malicious apps could reboot recovery in the middle of the night, flash some REAL spyware and feed back all your passwords without you knowing and could compromise your online accounts, still have to be installed first or some exploit would have to be found, but it just seems the risks outweigh the benefits.

Are you sure it's not another app you've consistently installed? F2fs? Clean installs + factory resets? Checked your signal strength lately? Wi-Fi + Bluetooth scanning? Facebook/whatsapp/etc installed? Google location history? Different versions of twrp? Titanium backups? Uncheck the the option in android settings to Backup and restore android apps? Installed several versions of older supersu?[ R4, r3, r2, r1, r2d2?]Franco kernel? [HIGHLY RECOMMEND. All the other kernels I've tried leave my device pretty warm, but franco keeps it cool), or Anoint your phone with luxurious oils, passionately bathe it and whisper sweet things into its microphone? [References here->

]

I just wanted to make my thoughts known, some newer users to root might come by, try and follow these steps hoping for SOT gains, and needlessly compromise their phone in the process.

If you persist in believing cf supersu is the root cause (that's a knee slapper!!) I think trying another supersu might be a better way to go than ticking all those options. Say like, phh's or CWM.

Again, I mean no disrespect to the OP. Just my thoughts.

 

[sarus_b]

Forget about SuperSU, You guys have no idea what causes the andriod OS drain after flashing.... So stop blaming kernel, SuperSU, gplay services etc.. The answer is out there in forums.. Feel free to browse and search for it...

 

[FlyingMachete]

Forget about SuperSU, You guys have no idea what causes the andriod OS drain after flashing.... So stop blaming kernel, SuperSU, gplay services etc.. The answer is out there in forums.. Feel free to browse and search for it...

I saw you also sprayed ppl with their own bs on Blu spark thread. All i can say is I roam those forums a lot myself but haven't come across a clear stating about these issues (apart from the SELinux shenanigans). So what about you flood us with your great wisdom instead big boy?

 

[sarus_b]

I saw you also sprayed ppl with their own bs on Blu spark thread. All i can say is I roam those forums a lot myself but haven't come across a clear stating about these issues (apart from the SELinux shenanigans). So what about you flood us with your great wisdom instead big boy?

Here you go:
Apparently you claim that you roam this forums and yet you didn't find the answer. Interesting claims.

Anyways here is your answer since even you didmt even fi d answer after roaming..

https://forum.xda-developers.com/showthread.php?t=3034811&page=5

Read it carefully though.. Explains why andriod OS drain battery more in first days (Not cycles) after flashing rom.. More apps, more the drain..

Tl;Dr for lazy people out there... Andriod os drain is present because Google itself has changed how andriod works..

On side note, I don't spread bs.. I just put my observations. It is upto people to fix it and accept the truth or get emo over it..

 

[FlyingMachete]

Here you go:
Apparently you claim that you roam this forums and yet you didn't find the answer. Interesting claims.

Anyways here is your answer since even you didmt even fi d answer after roaming..

https://forum.xda-developers.com/showthread.php?t=3034811&page=5

Read it carefully though.. Explains why andriod OS drain battery more in first days (Not cycles) after flashing rom.. More apps, more the drain..

Tl;Dr for lazy people out there... Andriod os drain is present because Google itself has changed how andriod works..

On side note, I don't spread bs.. I just put my observations. It is upto people to fix it and accept the truth or get emo over it..

I read this post from Rovo long ago, and I of course was taking about abnormal drains they were occurring long after reinstalls or new ROM flashes. It's well known, the rebuilding of caches etc.. Anyone complaining before this incompressible period should be treated like you do. Also, still thanx for minding sharing something at least and on a SECOND side note, read again, I never said you spread bs, pretty much the other way around, i was just suggesting you enlighten us instead of "spraying people with their own bs" like for example, on the Blu spark thread where I know you were putting whiners back in place. Cheers.

 

[sahed01]

I am using magisk, so what about me?