Overheating

Hello shajim.

Thank you for using Apple Support Communities and for sharing these details with us. It sounds like you're experiencing issues with your iPhone feeling warmer than usual. We can understand how this would be an issue. Allow us to share somme information with you.

There are certain scenario when your iPhone will feel warmer than usual. For more in-depth details on what might cause this to occur, check out the link below:

Keeping iPhone, iPad, and iPod touch within acceptable operating temperatures - Apple Support

Review the section number "Your device might get warm". If your device feels too warm that you're unable to use it or touch it, review the section under "If your device gets too warm".

We hope this information is useful. Cheers.

I have the same issue, since i’ve updated with new ios15.0.2 my phone is overheating and is very uncomfortable because is not normal condition. The response that Villas made is not a good answer, it’s more an excuse because people is complaining for an issue haven’t seen before in their equipment.