2, please confirm whether there is foreign matter in the charging port, if there is foreign matter, it is recommended that you shut down and clean the charging port in time, and clean it with dry absorbent paper towels or absorbent cloth (pay attention to prevent paper towels from falling into the tail insert), do not use the charging cable and earphone cable within 4 hours, and let the charging port of the phone dry naturally. After the cleaning is complete, please restart the phone to confirm whether there is still a warning of this abnormal phenomenon;
3, please confirm whether the charging port water, if water, please try to put the phone in a dry and ventilated place, and use paper towels to dry the water stains on the surface of the phone. If the phone is turned on, please press the power button to shut it down; If the phone is turned off, do not try to turn it on. Please remove SIM card and memory card;
4. Please upgrade your phone to the latest version.
5. If the preceding methods fail to solve the problem or the port is corroded or moldy, back up the data in advance and go to Huawei customer service center with the purchase certificate.