It wouldn't surprise me if these become illegal to use as the temptation to touch the screen and use your phone while driving will be too much.
I did a bit of research on this last year, I discovered that if your phone is in a phone holder and you are driving/moving it's already illegal to touch it unless you are clearing a sat-nav prompt/route, and/or answering the phone. It is illegal to plug in a destination to the sat nav and or make a call, and all other functionality when the car is actually moving.
This is why manufacturers are being pushed towards Carplay/Android-auto and other fully integrated solutions which have big buttons that are easy to use and less distracting/fiddly.
