Battery drain issue after November security update

Dear brother, this problem I faced also in my A51 and M21 after previous month update and fixed that easily by reset settings
follow these steps...

"Goto settings > general management > reset > reset all settings "
after reset it will restart automatically. And your settings will be default and new 👌
It's very safe and no any type of data loosing... 👍

If you find this helpful then accept this solution brother by clicking on three dots.. 👍 take care 🙂

Galaxy Note10 lite also has battery drain issue

30% battery down in 6 hrs (in night) with flight mode on

Same here in S21 ultra..

So i guess samsung need to working on optimizations rather than some gimmick like virtual ram..

All the devices are heating issues and battery draining issues after latest updates

Dear Samsung member,

Greetings from Samsung customer support.

Thank you for sharing your concern. And please follow the easy troubleshooting steps which might help to solve the issue.
Battery optimization helps you to boost the battery performance of your device. To check battery optimization:

Settings > Select Device Maintenance/Device Care > Optimize > Optimize all options like Battery, Storage and Memory

Kindly turn off the smart features of the device and other connectivity features when not in use, which will eventually help you to reduce battery power consumption (smart features such as Motion gestures in advance feature and Bluetooth, Wi-Fi, Hotspot, etc.).

Please follow the below steps:
1. Swipe down on the home screen to open the notification panel.
2. Tap on Bluetooth, Location/GPS, Wi-Fi, Mobile hotspot, NFC, etc. to turn off.

Thank you for writing to Samsung.
Warm regard,
Samsung customer support