Nokia
Nokia is a multinational company and is the second mobile phone manufacturer in the world and one of the leading companies in the telecommunications sector. Headquartered in Espoo Keilaniemi (Finland), Nokia is one of the best known brands within and outside the European Union.
Sony Ericsson
Sony Mobile Communications (formerly Sony Ericsson Communications AB) is a joint venture (JV) formed by the Swedish company Ericsson and the Japanese company Sony, which manufactures mobile phones and accessories.
Nextel
Nextel is the most effective integrated mobile communication system for people working in a team, since meet in a single mobile terminal, Direct Connect services individually or in groups (two-way digital radio), mobile telephony, paging and transmission mobile data, with the best cost / benefit existing on the market today.
Blackberry
BlackBerry is a line of smart phones (better known as smartphones in English) developed by the Canadian company Research In Motion (RIM) that integrates mobile email service, but includes typical applications of a smartphone: Address Book, Calendar , task lists, notepad etc. as well as telephone capabilities on newer models. It is primarily known for its QWERTY keyboard, and its ability to send and receive Internet e-mail by accessing the networks of cellular phone companies that offer this service. The term "blackberry" is also commonly used to refer to any mobile phone that incorporates a full keyboard.
