1. Friction heating
When charging a mobile phone, current enters the interior of the phone through a wire, creating some impedance between the wire and the phone interface, which causes some friction in the current, which generates heat.
2. Heating of electronic devices
The electronic components inside a mobile phone, such as processors, memory, etc., generate heat during high load operation, which in turn causes the entire phone to heat up. This is also why mobile phones are more prone to getting hot when playing games.
3. Charger quality
Some low-quality chargers may cause excessive current and unstable voltage due to issues such as wire material and circuit design, which can cause the phone to heat up.
4. Environmental temperature
When the phone is in a high temperature environment, it will generate more heat during charging. Therefore, it is recommended not to charge your phone near sunlight or other heat sources without turning on the air conditioning.
In summary, the reasons for the heating of mobile phone charging are relatively complex, but in most cases it is a normal phenomenon. As long as it is not excessive heating or accompanied by other abnormal situations, there is no need to worry.
