I think it would also be cool if when you buy/have the phone it has a little phone icon at the bottom or top of your screen, you click on it to use the phone. Nothing HD or stuff like that but just a black outline of a phone like this one:
It would be cool to have an app called Unite Maps. That's where it shows where you are and it shows where a friend is if they accepted the request:
It would look something like this:
Another app could be uChat where you can talk to friends without people on the server knowing what you are saying and without going to your condo with all of your friends and using private chat there. Also it would be good if you were in different lobbies.
A uSetting app that lets you change the color, sounds, etc.
An app that shows how many times you have played each gamemode and other stuff.