GSM
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GSM (Global System for Mobile communications: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world(GSM cell phone). Its promoter, the GSM Association, estimates that 82% of the global mobile market uses the standard.Which gsm cell phone are compatible with your country or site? cell phone gsm -900 and cell phones gsm -1800 are used in most parts of the world: Europe, Middle East, Africa and most of Asia. In south Americas it is in Costa Rica (gsm cellphone -1800)…gsm cellphones -850 and gsm cell phones-1900 are used in the United States, Canada.
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