1, Mi 11 wireless charger can only tighten a certain width of the phone, if the phone is relatively narrow, it may not be tight, resulting in intermittent charging.
2, it may be that the clamp of the charger itself is not enough, or there is a quality problem.
1. First, open the Xiaomi phone and click the power saving and battery options in the Settings screen.
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2. After entering, select the battery option in the upper part.
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3. Finally, turn on the wireless reverse charging function.
This may be a mobile phone problem, it is recommended to get the after-sales service to repair it.