The Mi 11 shell can be charged wirelessly, but it must be a silicone soft shell, not a metal phone case. Because the general non-metal mobile phone case will not partition the magnetic field.
Wireless charging has an induction distance, but the specific effective induction distance is how much, the manufacturers are not unified.
Electromagnetic induction charging: When the current of the power supply passes through the coil (the power supply coil of the wireless charger), a magnetic field will be generated, and other unenergized coils (the electric coil of the mobile phone) will be close to the magnetic field, and the current will be generated to charge the mobile phone.
Xiaomi 11 wearing a phone case does not affect wireless charging, as long as you find the right location