0-9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z 2.5G The generation of wireless networks between existing second-generation (2G) and future third-generation (3G) networks designed to improve the speed of wireless data transfer to handheld devices. Examples of 2.5G technologies include GPRS for GSM networks and EDGE for TDMA networks. See third-generation (3G).