Hi @Rakesh3 ,
can I ask if the phone has been near water or any other liquids? Are you able to check the Liquid Indicator: This is located inside the SIM tray slot, below the SIM frame, and is visible when the tray is removed from the device.
I am a Samsung Galaxy S10 Lite user that is experiencing the same 'Device Overheating' issue as the user above. I did happen to drop my phone in water, but that was more than a week before the aforementioned issues started. It was underwater for a max 2 seconds and I dried it thoroughly immediately afterwards. I just checked the Liquid Indicator you mentioned above and it doesn't show signs of damage (the are pink Xs on a white background instead of a red smudge). However, could the water still be the reason for the false overheating warnings I am getting now? Thanks!