Smart Phone and Next Generation Mobile Computing

12 Smart Phone and Next-Generation Mobile Computing

2.5 G wireless data services such as GPRS and EDGE are being used

by a large number of subscribers in Asia and Europe. UMTS/WCDMA

and WCDMA2000, the long-awaited 3 G networks and services, are

expected to deliver high bandwidth and reliable and secure data

access with a data rate of several megabits per second. 3 G services

available in the United States include cdma2000 1x-EVDO (Veri-

zon) and WCDMA/UMTS (Cingular/AT&T Wireless), among others.

In Europe, where UMTS/WCDMA dominates the market, Vodafone

and Orange began to provide 3 G data services in selected cities

in 2004. In Asia, Japan’s NTT DoCoMo (WCDMA) and Korea’s SK

Telecom (cdma2000 1x-EVDO) were the first to launch 3 G mobile

services, in