Think phone of the future. User interface design is modern, futuristic, with one touch or swipe to every selection the user makes. Like 3D touch for iOS, but all within the app, not just from the app icon. We don't want to integrate 3D touch itself as it will eventually go cross platform.
Maybe a mobile game feel, not a tired template tech feel.
Touch a face (contact) to call, leave message, or text.
All new phonebook interface
Group Call interface
Group Messaging interface
Access contacts with ease and fun
For 1 to 1 calls - The caller has a different view then the receiver.
For conference calls - there could be a circle or sidebar - and you can drag people into the group call and the other person gets a notification.
Demographic - Millennial and Generation Z
Consumer to Consumer App