Battery drain after Android 12 update

[Patarchy]

Hi there,

I have a S10 Spanish version (PHE). I have installed the last OTA update. (see software details at the end of this post)
Since then I have experienced battery drain. I consume twice more than before the update.
I use to charge my phone up to 75% and I use it until the end of the day (08:00 PM) with 25% remaining. Since the update to android 12, I am at 25% battery remaining at 02:00 PM.

After updating, I have boot in recovery wipe the cache. I have tried to wipe again the cache and run the Repair App. Same issue.
I have look to the "battery & maintenance care" and no app looks to consume more than before the update.
I have also done a "Reset App preferences" and reboot multiple time the device.

I use Tinycore for years and for CPU frequency since android 10. I can see that the frequency never stay to the minimum, always between 30% and 50%. Before update it use to be at minimum when idle but screen on. --> I am totally unable to figure out what generate this CPU usage.
BTW, when the phone is idle with screen off, I do not have the battery drain issue. Only have battery drain when I use the phone (Screen on)

How can I sort this out?
How can I diagnose the culprit app or service?

As a specificity, I use Package Disabler Pro.

Thanks for your help.

[leinadbauwens]

Same issue with my Note 10+.

My battery life used to be good for 25-27 hours on average, with moderate usage. Now on light usage, I'm struggling to get even 7 hours out of it. This changed overnight after the latest update.

[Perry]

My s10 is doing sane thing. It's also getting warm and lost over 70 percent charge sleeping beside me. Last night. It was fine before the update. I have battery savings on and no app is draining power. 

[Members_R16DaBI]

Same issue with 20+. I do not update my phone just because of this reason. 

[Chocolate Salty Ball]

I am experiencing the exact same battery drain since the update. I Have a Note 10+ and I used to charge the phone once every 2 days. Now I'm charging it up to 3x/day .. battery drains extremely quickly. I think Samsung is taking a page out of Apples book and screwing our battery to force us to buy new phones

[Djentleman]

I have the same problem with s10 +, I was a big fan of samsung but unfortunately it fooled me a lot, if it doesn't improve, I'm thinking so much about switching to apple. Even the TV from samsung nsa spoiled me after 2 years, I also bought a new one from samsung, and the model was much worse than the older model ...

[Elboufda]

Same for me , i did the one ui 4.1 update to see but nothing changed , now i will go for an iphone, i was always telling people that samsung are good phones , but now they started messing things up

[andrefragasantos]

Hi, 

After you updated to UI 4.1 did you do a factory reset?

[HopelessJoe]

Thank you for posting this fix, it worked really well for me. I was so frustrated with my battery draining after this version 12 update. (S10e)

Also, I'm not sure that it will be without side-effect for everyone, but I didn't notice any loss of data, or function, or slower app start-up times or anything. 

Thank you again for taking the time to share your knowledge.

[Sbuba]

Hi team community. 

Had the same problem after updating software to UI4.1

Battery power starting running out at bolt speed and my device was heating up. I am not a gamer or heavy user though. To stop this I went to Google search for solutions. I found it. 

I wiped my device cache. Voila! My device is back to the days when it used to last for a day without charging. I am super happy. 

Wipe your device cache and see what happens. 

[Elboufda]

i've done it and it even got worse , seriously, it got from 49 % to 42 % in 2 mins