The solutions to Bluetooth problems in the ASUS UX21E series are as follows:

1. Shortcut key invalid (FN+F2)

Reinstall ATK driver, wireless console.

2. The Bluetooth connection cannot be successful

Reset the password pairing (default 0000), or update the Bluetooth driver, reinstall the system and Bluetooth driver.

3. The peripheral Bluetooth device cannot be recognized

Reset the search for Bluetooth devices, or change the Bluetooth peripheral device of a different brand and try to connect.