Yes, fast charging can cause the Apple X to heat up while charging.
Because the fast charge needs to output more current and voltage, so that the mobile phone battery is full faster, and such high power will cause the mobile phone to produce higher heat, therefore, the Apple X in the fast charge, there will be obvious heating phenomenon.
In addition, frequent fast charging will accelerate the aging of the mobile phone battery and reduce the battery life, so it is recommended to use an ordinary charger under normal circumstances to protect the mobile phone battery and extend the service life.
Fast charging has a certain degree of normal fever. Check if your hands are hot