By design, the method of transmission for a GSM Cellular Phone is through Global System for Mobile (GSM) communication. Although this system was recognized in the past, it had been first employed on a commercial basis only back in 1991. Nowadays, most of the cell phones throughout the world use the GSM.

Because GSM utilizes the TDMA digital technology, the possibility exists to have up to three voices in one slot in contrast to » Read more: GSM Cellular Phone – 6 Powerful Must Have Benefits