A mobile device is an electronic device which its user can easily carry with them. Typical examples are a mobile phone, PDA and handheld game consoles. Mobile devices do not need an external power supply to work. Usually, they have a battery to hold electricity to work without electric wires. A user can change, send and move data by connecting to a modem or cable, or more often wirelessly.
Uses for these devices include reading and writing e-mails, surfing in the internet and listening to music. Smartphones, tablets and similar complicated mobile devices can run computer programs including computer games, and have many of the functions of a desktop PC.
Examples of mobile devices
Palmtop
PDA - Personal digital assistant
Cell phone
Pocket PC
Smartphone
Tablet computer
Smartwatch
Bluetooth headset
Categories
Mobile devices can be classified by size and capabilities: With small, text-screen. May be used to write short messages. 20th century mobile phones were like this. With medium screen and runs mobile operating system. Examples: Smartphone, E-reader. With big screen and runs desktop operating system. Examples: laptops, some tablets.