2G, first introduced in 1992, is the second-generation of cellular telephone technology and the first to use digital encryption of conversations. 2G networks were the first to offer data services and ...
2G, first introduced in 1992, is the second-generation of cellular telephone technology and the first to use digital encryption of conversations. 2G networks were the first to offer data services ...
This Centro is much like the 690, but for GSM networks instead of CDMA. Like the 690, this Palm smartphone is smaller than a Treo, but includes the same key features, such as a QWERTY keyboard ...