Mobile phone getting hot

The mobile phone will get hot when you are using it, because the radio-frequency circuit and CPU are running at a high speed and the power dissipation is larger; the mobile phone will get hot when it is charging, because there are large current. When the mobile phones are leaving factory, temperature rise should be in line with national safety. The normal range of heat is that you don’t feel obvious hot and no abnormal smell and no shell distortion. Don’t use the mobile phone to be on internet or playing big game when it is charging, and using earphone when you are calling.