Hand portable electronic device having a plurality of modes of operation

A hand portable electronic device having a plurality of modes of operation including a communications mode, an application mode, and a basic mode, and having a user input part and a display part comprising a display, wherein the user input part is movable relative to the display part between a first position in which a first portion of the user input part, comprising a first user input, is accessible and a second portion of the user input part, comprising a second user input, is not accessible while it is located behind the display part and a second position in which the second portion of user input part, comprising the second user input, is accessible and the first portion of the user input part, comprising the first user input, is not accessible while it is located behind the display part and wherein movement of the user input part to the first position causes the device to operate in the communications mode and movement of the user input part to the second position causes the device to operate in the application mode, wherein the user input part is configured to move in substantially a same plane between the first position and the second position wherein the device is configured to operate in the basic mode when the first user input and the second user input are not accessible, and wherein the basic mode comprises at least one of a basic communication function and a basic camera function.