Dear Samsung Member,
Greetings from Samsung Customer Support!
Please follow below mentioned steps and be assured that this should resolve your issue regarding "Device heating ":-
1) Turn off Wi-Fi, GPS, Bluetooth etc.
Swipe down the notification panel > Turn off Wi-Fi, GPS, Bluetooth, and other connectivity features.
2) Decrease the screen brightness.
Decrease the screen brightness sometimes high brightness level may cause the heating issue.
For heating issue kindly follow the below link and perform the troubleshooting steps:-
If issue still persist, kindly send us log file through error report section from Samsung Member within 15 minutes of issue occurrence, this will help us to assist you better. (Samsung member > Get help > Send feedback > Error report > Select the issue).
Thank you for writing to Samsung.
Samsung Customer Support