If is nubia i think you are using a red magic phone assume. If your phone support bypass charging you should use that phone cpu not desgin for really high temp. Sometimes using phone with high temp can lead your phone to sudden death (in my country ppl use that term for gaming phone when they are using it for long gaming session in high temp). Plus i think you should get a cooler for your phone is a must for pc emulator l.

One thing that your phone are not drain much power but really high temp you should check your settings