The phone cannot be charged fast, you can restart the phone, replace the data cable and re-charge, if not, you can follow the following steps to check:
1. Whether the temperature of your phone is too high, too low or too high temperature may lead to abnormal charging.
2. Please try to replace the wall plug or strip plug to confirm whether the external input voltage is unstable
3. Check whether there is dust in the tail plug and data cable.
4. If you have friends who use the same adapter and data cable around you, you can try to cross-check whether the source of the problem is the adapter, data cable or mobile phone.
The mobile phone connected to the fast charge charger it will show a fast charge, after which it will no longer show