Does a user need to enter any sort of username/password when trying to connect to an AP with Radius authentication via MAC address?

I mean, if i have a smartphone, when I want to connect to a Wifi with Radius, must I enter any stuff (username/password) or configure any stuff. I wanna have a "one tap to connect" experience assuming Radius server already have my MAC address.

NOTE: Yes, MAC address authentication is not 100% secure but for my use case, it's ok