Best answer by Arjay
I believe that the always-on-display feature is only on the P20 Pro and not the P20.
With the P220 Pro, the settings would be found :-
- Open the Settings App and select Security and Privacy
- Tap on Screen Lock and Passwords
- Tap on Always Display Information to enable the Always-on-Display to run 24/7 or schedule it to turn on and off at a certain time