The reason why Apple can't pop up a window when it is connected to Xiaomi Bluetooth.

If there is no pop-up window when Apple connects Xiaomi's Bluetooth, it may be due to the following reasons.

Bluetooth is not turned on.

If your Apple device doesn't turn on Bluetooth, you can't detect the Bluetooth signal of Xiaomi device. You can find the Bluetooth switch in the phone settings to turn on Bluetooth.

Xiaomi device does not turn on visibility.

Xiaomi device needs to turn on visibility mode to be detected by other devices. You can find the option of "detectable" or "visible" in the Bluetooth settings of Xiaomi device, and select on.

Unauthorized connection.

When the Apple device is connected to the Bluetooth of the Xiaomi device, authorization may be required, such as entering a password or confirming the connection request. Without authorization, the connection will not succeed.

The device does not support.

If the Apple device you are using is older, it may not support Bluetooth connection with Xiaomi device, and the connection window cannot pop up at this time.

Other issues

If the above problems are not solved, it may be a problem with the equipment or the software itself. You can try to update the software and restart the device.