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Webnorthern virginia cell phones - by owner - craigslist. 1 - 120 of 1,366. •. Iphone Chargeable Phone Case! 26 mins ago · Vienna. $15. •. Iphone Chargeable Phone Case! 30 mins … CDMA and GSM are both multiple-access technologies. They're ways for people to cram multiple phone calls or internet connections into one radio channel. GSM came first. It's a "time division" system. Calls take turns. Your voice is transformed into digital data, which is given a channel and a time slot, so three calls … See more When cell phone providers talk about a "G," they mean a generation of wireless technology. Each generation is able to support more users and has better data transfer capabilities. The first generation was analog cellular … See more LTE, or Long Term Evolution, is the globally accepted 4G wireless standard. All of the US carriers use it. For more, see 3G vs. 4G: … See more Everyone's scrolling, Snapping, texting, FaceTiming, and more. Demands for mobile data use continue to rise. 2G and 3G, CDMA and … See more 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. The … See more WebJun 6, 2024 · SIM cards: Before the advent of 4G LTE, the obvious difference between GSM and CDMA devices was with regard to the SIM card. GSM handsets came with a SIM card slot, while CDMA phones did not. In ... how to add grids in word