A mobile device, which is also referred to as a handheld, handheld device or handheld computer, is a pint-sized computing device. Mobile devices usually come with a touch or non-touch display screen and sometimes, even a mini keyboard.
There are many types of mobile devices, the commonest among them being, mobile phones, smartphones, PDAs, pagers and Personal Navigation Devices.
PDAs and smartphones are among the most preferred mobile devices, which offer all the conveniences of a personal computer, along with a very small form factor. EDAs or Enterprise Digital Assistants are best for business users.