Dear Samsung Member,
Greetings from Samsung Customer Support!
To resolve "battery drainage" issue please click on the link below:
And to resolve "over heating issue" please click on the link below for details:
If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report).
Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.
Thank you for writing to Samsung.
Samsung Customer Support