The problem is usually in the rear socket (charging port) or the charger
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The solution is as follows: Wipe the charging head and port and perform the following operations
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1. Connect a charging power detector in series at the charging port to see whether it meets Huawei fast charge parameter standards. If the input power is normal, but the charging speed of the mobile phone is still very slow, it can be judged as a mobile phone problem.
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2. Use the original charger to charge other Huawei mobile phones that support the fast charge protocol. If the charged mobile phone cannot be charged quickly, it is a charger problem.
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3, after 1 and 2 steps of the distribution test, if there is a problem, that is, the phone tail plug, charge and discharge module and charger are faulty, it is recommended to go to Huawei official after-sales.