Is the charging head and data cable not standard used? If you do not use the standard charger and data cable to charge, due to different brands and power chargers, there are differences in charging specifications and fast charging principle, mixed charger\/data cable may lead to slow or no fast charging. Please check whether the USB interface of the data cable and the USB interface of the phone are clean. If dust is found, it is recommended to clean it with a brush and then charge it again for confirmation.
(1) When charging, the charger, data cable, and mobile phone charging interface are not in contact, which may lead to slow charging and no charging phenomenon.
(2) Check whether the joint and jack are clean. If dust is found, it is recommended to wipe it with alcohol or clean it with a brush. If alcohol wipe, need to wait for alcohol to dry, and then re-charge to confirm.
(3) Support super fast charge mobile phones, if the charger data cable is not connected, it may not be able to enter the fast charge state.
.Shutdown charging test.
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2. Replace the charging position and eliminate the intermittently caused by poor socket contact
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3. If conditions permit, replace the standby charger for testing.
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4. When charging, if the phone is equipped with a third-party plug-in such as charging doctor, it is recommended to uninstall and test.
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5. Check whether there are foreign objects in the charging interface of the mobile phone, such as liquid intake and debris resulting in poor contact between the charging interface and the charger. If this is the case, it is recommended to send for repair as soon as possible
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6. Back up the phone data (phone book, SMS, picture, etc.) and restore the phone to factory Settings.
Huawei nova4 uses a 22.5-watt charger. Unstable charging is due to insufficient voltage. Please use a regular voltage to charge