A Tablet that could comfortably last for over a day with OneUI 6 is now barely able to last for a day of use. Samsung had to make a few changes to maintain this exceptional performance, but they did the opposite. I sincerely hope this issue has been brought to the attention of the authorities and they are swiftly implementing a solution.
Samsung is working on a fix for battery drain, although it's unknown when that will be rolled out. See this post for more info and some things you can try until the fix is issued:
@Pouya731H I'm not seeing the same on my Tab S10+.
Did you wipe the device cache partition after the update? I recommend that you do this after every device update. It wipes out incompatible or outdated cache information which might be incompatible after the update. It does not erase any user data nor applications.
To wipe the device cache partition:
1. Power off your device. Connect the tablet to a phone or computer via USB. 2. Power up while holding down the Volume up key and the Side key until the Samsung logo appears. 3. An Android recovery menu will appear. 4. Use the Volume down key to scroll down to Wipe cache partition. 5. Click the side key to select it. 6. Use the Volume down key to scroll down to Yes. 7. Click the side key to select it. The Cache will be wiped almost instantaneously. 8. Click the side key to select "Reboot system now"
