Normal, not a quality problem. Due to the use of fast charge technology, the current is too large, the voltage is too high, so the battery heat, which is a normal phenomenon.
< br >
Reason: The Linear charger is used for charging.
< br >
The power adapter is usually 5V voltage output, and the mobile phone power supply is floating between 3V-4V, the greater the pressure difference between the battery voltage and the output voltage, the higher the power loss rate will be, and the heat generated by the power loss will all be scattered on the mobile phone, which will lead to heat when the mobile phone is charging.
< br >
The external temperature is too high, the external temperature is too high, the heat dissipation function of the mobile phone is basically zero, so the heat is quickly gathered, resulting in hot. Poor use habits, when charging, should not open too many applications, if you can not use, try not to apply.
Mi 12s ultra charging heat abnormal. There are generally the following reasons
1, if playing the mobile phone while charging will lead to charging heat, it is recommended that users do not charge while playing the mobile phone.
< br >
2, may be caused by the current instability, it is recommended that the user check whether the charger is plugged tightly;
< br >
3, there may be a problem with the charging plug or charging line, it is recommended that the user ask a professional maintenance personnel to check, if there is a problem to replace in time.
< br >
4, mobile phone battery problems, may be the health of the battery is relatively low, it is recommended that the user to replace the new battery after sale.