Apple mobile phone charging intermittent, this is likely to be your tail plug bad contact or the charger has a problem, this time in order to avoid the phone battery bad to immediately stop charging, cut off the power, hold the phone and charger. Go to the after-sales service center for testing and maintenance, see what is the cause, if there is a problem with the tail plug of the phone, it can be used after replacing the tail plug.
Charging intermittently, this situation is caused by poor charging contact, this case you replace the charger to try, the basic charger problem, you can replace the charger to try to use, normal