Most common type of wireless telephone communication today. It allows slow data communication, but its primary focus is voice.
2.5G
Bridging standard between 2G and 3G. Digital communication allows e-mail and simple Web browsing.
3G
3G stands for the third generation of wireless communication technology. It refers to pending improvements in wireless data and voice communications through any of a variety of proposed standards. The immediate goal is to raise transmission speeds to 2Mbit/sec.