1. The temperature is too high
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When the iPhone is charged to about 80%, it stops charging.
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If the situation stops after charging to about 80%, the most likely reason is that the iPhone itself or the ambient temperature is too high, the system will limit charging after the battery reaches 80% in order to protect the battery from damage. In this case, find a professional to test to see if the charger is a problem, if not to find someone to repair
The solution is as follows:
Take out the data cable to test charging
Take out another data cable and test whether it can be charged normally. 2 Replace the original data cable
If it can be charged normally, the original data cable is damaged, and a new data cable can be replaced.