A mobile phone, also known as a cellphone, mobile, or handphone, is an electronic telecommunications device with the same basic capability as a conventional fixed line telephone, but which is also entirely portable and is not required to be connected with a wire to the telephone network. With most modern cellphones you can do a lot more than just making phonecalls: with most models you can send an SMS or e-mail, surf the internet, play games, save phone numbers so you'll never have to write down or memorize them again and much, much more.