The Nalu concept cellphone attempts to address the problem of too many different interfaces getting in the way of functionality. It combines a phone, media player and text input (for e-mail and text messages), each with their own distinctive interface. I’ll concede that it looks nice when closed, but otherwise it looks too cumbersome to use on-the-go. Maybe if you sit at a desk all day it could work, but I live a very active life; I can’t be expected to be near a coffee table all day where I can set this thing down upon.”]
Source: https://gizmodo.com/nalu-cellphone-concept-when-multiple-interfaces-attack-237792