The Model 3 comes with a…
The Model 3 comes with a phone cradle that accommodates two smartphones and charges them wirelessly. The car also has one of the biggest displays on the market, and shows you all the common things you'd want to see on a phone while driving, such as navigation and audio. The navigation system is better since it integrates battery usage, a trip computer that accounts for the specific vehicle, weather, elevation, speed and other factors, and keeps you from ever running out of charge by getting you to chargers. In worst case scenarios it will tell you the maximum speed to drive so you won't run out of charge. So you probably won't need to see your phone but it's still convenient.
That's not to say that there's nothing to dislike about the car. People might prefer different cars for lots of reasons. But not having a place for a phone is not one of them.