It’s safe to say by this point that the launch of the iPhone 15, especially its Pro variant, has been among the most eventful in recent memory. While it’s not a bad phone by any means, reviewers and early buyers have raised some concerns, especially with the durability of the titanium coating. More recently, reports about the phone overheating have popped up, and Apple is now working on a fix for heat problems.
Source : Is Your iPhone 15 Pro Overheating? Apple Is Working on a Fix