If your Huawei Mate 20 Pro wireless charging coil is damaged, then it will not be able to charge through wireless charging. You can try the following steps to resolve the problem:
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1. Clean the coil: Sometimes, there may be dust or dirt on the coil, which will affect the effect of wireless charging. You can gently wipe the coil with a clean cloth to ensure that its surface is clean.
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2. Replace the charger: If you are using a wireless charger, there may be a problem with the charger itself. You can try replacing it with another compatible wireless charger and make sure it works properly.
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3. Check the Settings: In some cases, you may need to enable wireless charging in your device Settings. Please check your device Settings and make sure the wireless charging option is enabled.
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4. Repair or replacement: If the above steps do not solve the problem, then it may be because your Huawei Mate 20 Pro wireless charging coil has been damaged. In this case, it is recommended to contact the after-sales service center for repair or replacement.
You can go to Huawei's official flagship store to buy another wireless charging coil, or take him to Huawei after-sales service center to increase the price. Get a new one.