1, the most common reason for charging is that the adapter does not match or is incompatible with the mobile phone. Because some models of mobile phones don't have a built-in charging chip, they need an original data cable with a charging chip. Generally, you can charge your mobile phone normally with your own original data cable.

2. It is possible that there is something wrong with the quality of the adapter, and any product will be defective. So in this case, please change the line with the merchant in time.

3. It may be that the USB contact of the mobile power supply is not very good. If the mobile power supply is not plugged in for many times, the interface part will always wear out. In this case, a new USB charging cable needs to be replaced.

4. It is also possible that the mobile power supply voltage is too low. The normal charging voltage of the mobile power supply is 5V, and the voltage will keep falling after the mobile power supply consumes power. Generally, it can't be charged when it reaches 4.3V, because the battery voltage will be raised to 4.2V when the mobile phone is charged, so it must be higher than this voltage to charge.

It can't be solved in the end. You can contact the manufacturer for maintenance.