When the mobile phone is charging, the automatic power off, the reasons are generally several: 1, the charging control circuit is faulty; 2, the charger is faulty; 3, poor interface contact; 4, the battery performance is close to failure.
According to the phenomenon you described, there are only two reasons: 1 is the charging head is broken (whether it is the original or it brand, the charging head is used inside the resistance, capacitor step-down rectification, and then voltage regulation into 5V power supply, the advantage is small size and large current, the current can reach 1-1.5A; The disadvantage is that the performance is not good, the voltage is unstable, and if the capacitor breakdown is possible to damage the phone); 2 is that the battery has failed, has not reached the nominal voltage and capacity.
You can verify that the method is to plug the phone into the computer or use the switching power charger (that is, the old big charger with USB interface) on the charge, if the power is constantly, then it is the problem of the original charger, on the contrary, if the fault is still, then the battery has failed.
It is recommended that when charging the mobile phone, you should try to choose a switching power type charger, but the charging current should be controlled below 0.5A, so that the phone can avoid hot charging, but also to extend the life of the battery.
1, the phone charger plug is not inserted, resulting in poor contact.
Solution: Try re-plugging the charger.
2. The charging instability may be caused by poor contact of the socket.
Solution: Try replacing the socket where your phone charges.
3, charger head or data cable problems.
4. Too much dust inside the phone leads to poor contact when the phone is charging.
5. The mobile phone is charged with a non-original charger, resulting in abnormal charging.
6, mobile phone battery aging, resulting in poor phone contact.
7. Anomalies caused by malware or virus intrusion on mobile phones.
8, mobile phone hardware damage, resulting in poor phone contact.