A lot of Bluetooth keyboards (most in fact) lack the function keys but may have a built in key-combo to access them (I have one that uses the number keys while holding function, unfortunately it lacks the ability to use F10,F11,F12 do to the lack of a 10,11,12 key)BTW Bluetooth keyboards are low energy devices that have a non adjustable timeout making them very kind of a pain to use , if you stop touching keys it turns off and must reconnect before input. The timeout is set ridiculously low, under 30 seconds in most cases. I quit using mine because of this. The problem is not fixable. Bluetooth device has yo initiate the pairing process receiver just listens and has no control over the pairing session. Its frustrating, just thought I’d save you some grief.