The Realme 9 Pro+ is one of the best phones designed and developed by Realme, and we can say the best phone in the Realme 9 series.
Realme 9 Pro+ Heating Issue
Firstly the Realme 9 Pro+ has a vapor chamber cooling system that can cool down to a maximum of 10° C from the core heat. And the design and mechanical system of the phone has so many advantages. So there is no official error on the phone for which we can say it has a heating issue.
So, The Realme 9 Pro+ has no heating issue.