Active Level 1
a50 battery drain after October update
Expert Level 5
if after update then do these steps

A. Wipe Cache Partition.
Steps to perform.
1) Turn off the device.
2) Press and hold the Volume Up key and the spower button.
3) When the Android logo displays, release all keys.
4) Press the Volume down key to navigate and select "Wipe cache partition".
5) Press Power key to select. When the wipe cache partition is complete, Select Reboot System.
6) Press the Power key to restart the device.

B. Reset App Preferences.
Settings >Apps> Tap on Top Right 3Dots and select Reset App preferences.
if you not done yet then do some settings to save more battery life and observe for next 1-2 days, it will give a noticeable difference

1. Connection>more connections settings> disable nearby device settings
2. Location>improve accuracy >disable
A. Wifi scanning
B. Bluetooth scanning .

3. Device care>battery >power mode>select "optimised" and "adaptive power saving".

And then click on "app power management >
And enable these 2 options.
A. Adaptive battery
B. Put Unused Apps to Sleep.

4. Long press on each app specially 3rd party(LIKE FACEBOOK, YOUTUBE) and rarely used apps and also ON "GOOGLE APP" as well, then click on>app info> then go to these 3 options below on by one

A. Mobile data> allow background data usage>off

B. Battery >allow background activity >off

C. Notification >disable unnecessary notifications like promotional and unnecessary reminder notifications.

5. Go to settings >apps>search "weather" >click on settings icon right side > change "auto refresh" settings as per your requirements and disable some unnecessary reminder. ( due to auto refresh it continuously consuming battery?)

6. If you use Facebook frequently then disable "auto play video"
And if you are mostly uses mobile, on wifi connection then also disable "auto play videos" in YouTube.
Active Level 9

Dear Samsung Member,

Greetings from Samsung Customer Support!

We apologize for the inconvenience caused to you. To resolve battery issue kindly follow the below given step:-

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

For more information on battery drainage please click on the link below:-

If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question). Kindly send us the screenshot (which apps are consuming most of the battery).
Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support


Same on the samsung a51 ive been noticing extreme battery drain even after replacing the battery, my phone is completely optimised with most apps (also system) disabled, all my apps are being put to deep sleep airplane mode on most of the time and medium power saving mode on 24/7 all due to that dumb october update the phone used to last about two days and now it has to be charged twice a day.this update has also distorted sound of some games so far ive tried almost everything like turning off background processes having all apps in the rare standby state and ive also done multiple resets which somehow only fix the ptoblem for about two hours before reverting. I am very displeased, please fix thus issue so that im not forced itno buying another phone.