Beginner Level 2
Samsung Galaxy on8 charging very slowly after android 10 update for me any idea to resolve this issue please 
Expert Level 2
nothing tips would work please wait till next update given
Expert Level 5
wait for next update and also sedn feedback to samsung
Active Level 8

Dear Samsung Member,

Greetings from Samsung Customer Support!

To resolve charging issue kindly follow the given below step:-

- If you are using non-genuine Samsung charger, check device charging by using another Samsung genuine charger. (If available)
Note: We always recommend to use genuine Samsung charger for charging your device.

If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report) along with Screen-shots(time taken to charge). This will help us to further investigate and resolve your concern.
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