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.
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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.
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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.
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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.
The cause of disconnection may be:
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1: The charger is in poor contact.
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2: The power supply voltage is unstable.
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3: The phone charging port is not good.
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solution
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1. Wipe the charging plug and try it again. Replace the charging cable if there is a problem.
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2. Confirm whether the voltage is stable. I can't control that. Charge only when the voltage is stable.
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3, the mobile phone jack is damaged, to the repair shop to replace the mobile phone jack.
There are several reasons why the charger will power off once plugged in:
1, there is a short circuit inside the charger, so there will be a power failure when connecting the socket.
2, the electrical appliance connected to the rear of the charger has a short circuit phenomenon, which will also cause the socket to have no electricity.
3, the socket internal connection parts appear loose phenomenon, resulting in the plug can not be connected normally after insertion, resulting in power failure.
It may be unstable charging caused by poor contact of the socket. Ensure that the strip can output power normally, and try to replace the strip for use. If the charger has a problem or hardware failure, you can change a charging cable to charge it.
If it is a problem with the mobile phone system, the phone can be restored to factory Settings and then charged, or directly shut down to charge.
If it is the reason of the mobile phone charging port and the battery, it can only be repaired after sale