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.
UK S10 here and same problem after update to Android 12/UI 4.0. Hardly used my phone today and yet by 6pm I'm down to 20%.
No unusual app activity and nothing in the battery stats which indicate any heavy usage/drain by a certain app.
I've just wiped the cache so going to see if that helps
FYI to all. This has been a problem with multiple devices. Pixels were doing this really bad back in October. Doesn't look like there is any work around at the moment. My s10e is getting maybe 4 hours of use now. Battery is draining so super fast. 😞