Overheating?

[berto35]

Today I felt my Zenfone 9 hotter than regular while listen YouTube Music through the phone speaker for about 2 hours and battery drained faster, my phone was in my pocket all the time and when I checked the phone temperature with an infrared thermometer the temperature was at 90F with  75F  ambient temperature. The phone was 15F more than ambient temperature. Is  90F a normal temperature? My Zenfone 9 has the latest software update available and is not rooted.

[tochmi]

I have also noticed with the .165 update it gets hotter. The battery thing I have not noticed. 

What surprises me the most is that there is no post about this update.

Will it be an update that shouldn't have arrived? 🤔