1. Power supply and charger problems
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Many iPhone mobile phones can not charge, or plug in the charger to show charging, but the iPhone is not charged into the electricity, may be the source socket loose or is originally defective charger caused, we can change a socket or charger to try (try to scratch off some oxides above the charger), this can basically solve more than 50% of the problem.
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2. The tail insert of the iPhone has water stains, foreign objects, or damage
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Now whether it is with a mobile phone case or \"naked running\
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3. The temperature of charging environment is too low
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Apple battery is very expensive, if your area is extremely cold or hot, iPhone charging will be affected, especially in winter, we are used to charging at night, tired, and then sleep to charge the phone, wake up in the morning, the phone power 20%, we can try to put the phone in a place where the temperature is appropriate to charge (not recommended to put the bed charging).
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4. Excessive battery consumption or the battery management IC is damaged
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In general, this situation is relatively rare, you can first check the battery health through our way of education. In normal use, the battery health of the iPhone is above 85% within a year, and more than 75% within two years is normal, if there is an anomaly, it needs to be paid attention to. In addition, because the mobile phone fell to the ground to lead to the motherboard components welding, battery management IC damage, this can only find the maintenance master.
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5. The mobile phone system is faulty
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Some just upgrade the new system or use the test version of the system, there may be this problem, at the same time press the power button Home button, until the Apple Logo appears, forced to restart the iPhone, should be able to solve, if it can not be solved only brush the machine, it is recommended to brush the problem.
Cause: Mobile phone tail plug problem
If the above problems are eliminated, you can use a relatively sharp needle to gently poke the tail of the phone to pull out the dirty things inside.
It is basically the charger problem, or the tail plug is moldy and deteriorated, in this case you can replace it, this is the charger problem, you can solve by replacing it