![]() Their prepaid lines now are all called AT&T Prepaid. ![]() 3G is on 850 MHz and 1900 MHz up to HSPA+. It has the biggest coverage nationwide aside from Verizon and gives the best compatibility with devices both within and from outside the United States.ĪT&T's 2G was shut down by January 1st, 2017 and is no longer available. AT&T is the biggest GSM-based provider in the US, rivaling only with Verizon. ![]()
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