The Mi 11 Ultra supports 30W Wireless flash Charging, but requires a 30W Mi Wireless Charging Pad or other compatible fast charging device to achieve fast charging. If the wireless charger you use is insufficient, or there is interference between it and the phone, it may cause the wireless charging speed to slow down. It is recommended to use the original charger or the official recommended charger, and keep no obstacles between the charger and the phone. At the same time, when wireless charging, you should also try to avoid using other high-power applications at the same time, so that the phone can get a better charging effect.
The charger may be in poor contact, you can re-plug the charger.
The charger may be faulty, try to replace the flash charger for comparison and observation.
It may be caused by not using the original charger.
It may be that the mobile phone charging port is damaged, resulting in poor contact.
It may be that the mobile phone battery is aging, causing the battery performance to decline.
In addition, it could be that the phone is turned on. Presentation mode " , causing flash charging failure.
Yes, the 11u radio does not support fast charging.