Indicates that the charger is shanzhai (fake original)... The original charger has been tested for compatibility. The safety and emc of the charging head in the cottage have not been done, and the quality depends on the conscience of the cottage manufacturers.
This fake charger's conducted interference just interferes with the touch chip... Although emc and safety requirements may be met.
It is recommended to return, you can consider using other random original chargers, such as Xiaomi, Apple, Samsung, Huawei... This one doesn't usually have that problem... It just charges a little slower.
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Or buy millet insert is also a good choice. Personally tested, millet, green link, bull (Roma Shi, aszune foundry to batch) charging head without this problem... Taobao third party charging head is much better than the fake original quality...
The buzz of the charger is generally an abnormal phenomenon when the mobile phone is charging, and there are three reasons for the buzz:
The voltage is unstable, the use time of the charger is too long, and the connection contact is poor;
It is recommended to check the charger temperature and charger socket.
You can change the charger, and then check the phenomenon.
Improvement method: The normal charger will not have that sound, because the mobile phone charger charging voltage is very small, it is recommended that you go to change the charger, so as not to damage the phone.