Why are these "mobile"?
More recently, data transmission over the mobile was exotic, which few people are interested in practical terms. But now the situation is changing rapidly:
evolving cellular networks based on GSM networks can add additional services and applications:
rapid development of Internet increases the need for users to access;
use of intranet (internal corporate network), orienting to connect business users to corporate networks in the mobile version;
emergence of small computers such as PDA or palmtop suitable for use with mobile phones;
mobility of workers - a growing number of people working at home or during the trip, which requires the creation of their systems to support mobility.