GSM is a type of cellular network that AT&T and others use. CDMA is another network type that mostly just Verizon uses. GSM only means that it will only work on carriers that use that network , which Verizon does not and therefore you can’t use it with Verizon (and other carriers that use CDMA)
Read moreWhat are GSM standards?
GSM Standards means the standard specifications by ETSI and/or other national telecommunications standards setting body, that are applicable to the Global System for Mobile Communications (“GSM”), the General Packet Radio Services (“GPRS”) and the Enhanced Data for GSM Evolution (“EDGE”) including its revisions, and …
Read moreDoes US use GSM or CDMA?
GSM networks are far more popular globally, but in the US, Verizon Wireless, a CDMA network , boasts the highest number of subscribers and broadest coverage in the country. International roaming: In your home market, it doesn’t matter what kind of network it is, with the focus instead on the available coverage.
Read moreIs GSM available in USA?
Which Are GSM? In the US, Verizon, US Cellular, and the old Sprint network (now owned by T-Mobile) used CDMA. AT&T and T-Mobile used GSM . Most of the rest of the world used GSM.
Read moreWhat is US GSM SIM?
A Global System for Mobile Communication Subscriber Identity Module , or GSM SIM card, is a SIM card that uses the GSM network. Having this card in an unlocked cell phone while using the correct frequency allows a cell phone user to use his cell phone in various countries all over the world.
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