Dear Samsung Member,
Greetings from Samsung Customer Support!
Please be assured and to resolve "battery drainage" issue kindly follow the given link below:
And to resolve "overheating" issue kindly follow the given link:- https://www.samsung.com/in/support/mobile-devices/why-the-heating-issue-occurs-in-mobile-device/
And as of now there is no update available regarding your device. So, whenever there will be any update of it you will be informed for the same.
If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report)along with screenshots, short videos and error log file, so that we can assist you accordingly.
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