In Britain and many other countries, the name for what in north America is referred to as a cellular phone. Incidentally, Europe and Asia are light-years ahead of North America when it comes to mobile/cellular phone usage. Example: as of May 2000, in Britain, Finland, Sweden and Italy over half of all adults own a mobile phone. And the entire continent works on the GSM standard, I think analogue phones were phased out over five years ago.

As another brief example of how ubiquitous these things are in the UK, most primary (elementary) schools in Britain have had to ban them due to their incessant ringing irritating the teachers. And the shelves of Toys 'R' Us over here are lined with Nokias, Ericssons and Motorolas.

December 12, 2000: An update to the statistics above: after the forthcoming round of gift-buying for Christmas it is expected that two-thirds of Britons will own a mobile phone. Note that's 2/3 of the entire population, not just adults. And apparently we're texting each other nearly a billion times a month, too...