Abstract: The field of the invention relates to mobile phones arranged to reduce a specific absorption rate of mobile phone radiation into the body of a user. There is provided a bar form factor mobile phone device comprising front and back major faces, the front major face arranged to present a first display screen and the back major face arranged to present a second display screen, wherein the device comprises an antenna operable to receive radio frequency transmissions, wherein the first and second displays have low transmission at the radio frequency transmissions, and wherein the antenna is arranged near to a side face of the device.

Abstract: There is provided a display device including a display and a hardware power button, wherein the power button is operable to open from the device to receive a subscriber identity module (SIM) card, and wherein the power button is operable to close so as to store the SIM card in the device, wherein the device is operable to use the SIM card to define a SIM identity for the device.

Abstract: There is provided a bar form factor display device comprising front and back major faces, the front major face arranged to present a first display screen and the back major face arranged to present a second display screen different to the first display screen. In one example, the back face screen is a bi-stable screen.

Abstract: There is provided a bar form factor display device comprising front and back major faces, the front major face arranged to present a first display screen and the back major face arranged to present a second display screen different to the first display screen. In one example, the back face screen is a bi-stable screen.