Questions relating to mobile computing devices, such as cell phones, tablets, and e-readers. Includes consideration for both small screen size as well as the mobile and "always on" nature of the devices. Questions tagged *mobile* should in one way or another reflect a particular aspect unique to mobile devices, as compared to digital screen design in general

Mobile computing is a form of human–computer interaction where a computer is expected to be transported during normal usage. Mobile computing has three aspects: mobile communication, mobile hardware, and mobile software. The first aspect addresses communication issues in ad-hoc and infrastructure networks as well as communication properties, protocols, data formats and concrete technologies. The second aspect focusses on the hardware, i.e. mobile devices or device components. The third aspect deals with the characteristics and requirements of mobile applications.

Reference: Wikipedia article on 'Mobile Computing', retrieved 2011-04-25

Also see and for related issues.