What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...
Does anyone know or have first-hand knowledge about installing a Verizon SIM card of an A840 into an unlocked Motorola V635 -- In other words, will the unlocked V635 work in the U.S. using Verizon's ...
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