Overheating issues with my iPhone - Action Taken and Resolved.
đ±Facing iPhone heating issues? Here's what worked for me on my iPhone 12 Pro:
1ïžâŁ Backup on iCloud/iTunes
2ïžâŁ Log out of Apple ID
3ïžâŁ Erase (Keep eSIM Data)
â DO NOT restore from backups! Set up as new iPhone. Wait 2-3 days - no issue! That Indicates...
â
No hardware/ iOS issue
Now...
đŠ Restore data gradually
đ Find app/settings causing heat

My experience says this is purely caused by some third-party app that you may have installed.
I am not aware of the ambient temperature in which you are using the iPhone. However --> Keeping iPhone, iPad, and iPod touch within acceptable ...
Store the device where the temperature is between -20Âș and 45Âș C (-4Âș to 113Âș F). Donât leave the device in your car, because temperatures in parked cars can exceed this range.
Use iOS devices where the ambient temperature is between 0Âș and 35Âș C (32Âș to 95Âș F). Low- or high-temperature conditions might cause the device to change its behavior to regulate its temperature. Using an iOS device in very cold conditions outside of its operating range might temporarily shorten battery life and could cause the device to turn off. Battery life will return to normal when you bring the device back to higher ambient temperatures. Using an iOS device in very hot conditions can permanently shorten battery life.