Are We Calling It Cell Phone Or Mobile Phone?

When you go to add a new person it asks for Cell Phone under Phones.  Then when you go to select a Preferred Phone Type Cell Phone is not an option, instead it's called Mobile.  When you go to the 360 View the Cell Phone number displays will an M, for Mobile.  Can we go with one or the other across the board?  If I were to choose, I'd prefer Cell Phone with the C on the 360 View.