It is described that the mobile phone charging contact is poor, there are several possible reasons:
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The data cable problem may be that there is a possibility of breakage in the data cable, it is recommended to use someone else's data cable to try it;
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It may be the problem of the data cable connector, the connector is loose, or the entry has dirty things, you can clean it up and try;
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If you still can't use someone else's data line, then it is recommended to go to the after-sales service to check whether the interface of the mobile phone is loose, or the jack of the mobile phone is broken. Then we'll have to replace the hardware.
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If your battery is removable, then remove the battery and use the universal charger to charge, if it can be charged, then it is the problem of the mobile phone charging interface, if it can not be charged, then rule out the third possible cause: the mobile phone interface is broken.
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The same step as the previous step, if the mobile phone battery is removable, then change a battery, if it can be charged, it means that the battery is scrapped, then buy a new battery. If you still can't charge, then there is a problem with the mobile phone system, this time you should take your mobile phone to the after-sales service to see.
It should be that the charging device of Huawei tablet is faulty, and the charger should be replaced by a new charging device.