1G cellular

The first generation of wireless networks, known as 1G, was a basic analog voice phone service without data capability.

First Generation standards:

1. Advanced Mobile Phone System (AMPS) was first launched in the US. It is an analog system based on FDMA (Frequency Division Multiple Access) technology. Today, it is the most used analog system and the second largest worldwide.
2. Nordic Mobile Telephone (NMT) was mainly developed in the Nordic countries. (4.5 million in 1998 in some 40 countries including Nordic countries, Asia, Russia, and other Eastern European Countries)
3. Total Access Communications System (TACS) was first used in the UK in 1985. It was based on the AMPS technology.