GSM (Groupe Special Mobile) – Global System for Mobile communications – most popular standard for mobile phones in the world. GSM 900 / GSM 1800 MHz are used in most parts of the world: Europe, Asia, Australia, Middle East, Africa .
GSM (Groupe Special Mobile) – Global System for Mobile communications – most popular standard for mobile phones in the world. GSM 900 / GSM 1800 MHz are used in most parts of the world: Europe, Asia, Australia, Middle East, Africa .