First Generation

(one-G)

Analog cellular phones (i.e., first-generation). In mobile telephony, first-generation systems were analog, circuit-switched. Voice links were poor, handoff unreliable, capacity low, and there was no security. 1G systems are no longer under active development and, in some areas, 1G spectrum is being auctioned for 2G and 3G use.

More Information

• Cellular Networks QuickStart: Getting up to Speed on Cellular, from 1G to 3G