Why does the REDMI Pad 2 Pro fail to connect to a REDMI Smart Pen or keyboard?

The REDMI Pad 2 Pro will fail to connect to a REDMI Smart Pen or keyboard using Bluetooth. This is because after a long disconnection, the device and stylus or keyboard will not reconnect, requiring re-pairing.
If you need to re-pair, please refer to the following steps:
  1. Unpair the saved Bluetooth keyboard and REDMI Smart Pen in the Bluetooth settings interface.
  2. Turn the keyboard on and off, re-enter pairing mode, and then scan for connections.
  3. Press and hold the REDMI Smart Pen button for more than 10 seconds to enter pairing mode and then scan for connections.