Are you using the phone cradle? If you place your phone in the cradle, you can use your phone touchscreen to place calls/hangup or swipe your way through your phone's contacts. To me, it's not any different than using the screen controller in a brand new vehicle from Mercedes-Benz, Infiniti, Lexus, BMW, etc,. The only difference between the smart car and some of the luxury ones (some, not all, usually voice control is optional) is the lack of voice control.
Using the radio to access your phonebook is possible, but is a chore considering the onscreen text is limited to a couple lines.
You can use SIRI or Samsung Voice or equivalent to use voice commands to control your device. If your phone is placed in the phone cradle you can turn on your voice control app while you're driving so you touch the talk button on your phone to give voice commands. Be sure that you have a short charging cable handy so you can make sure that your phone's screen never goes to sleep while you're driving because it will stay charged up that way. There is a usb input on the phone cradle so your phone can stay powered up.