AT&T

MVNOs sell their own SIMs and plans but run on AT&T's network rather than owning one.

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About AT&T

AT&T Mobility, operating in the United States of America (North America & Caribbean region), stands as one of the nation's largest mobile network operators. Identified by its Mobile Country Code (MCC) of 310 and Mobile Network Code (MNC) of 560, AT&T provides a wide array of telecommunications services, including voice, data, and IoT solutions. A historical giant, AT&T's evolution reflects the transformation of the American telecom landscape, building upon the legacy of Alexander Graham Bell's initial inventions. Its extensive network coverage reaches across the continental US, Alaska, Hawaii, and parts of the Caribbean, rivaling competitors like Verizon and T-Mobile in terms of subscribers and infrastructural footprint. AT&T's place in the US mobile market is built on constant innovation; from their early adoption of GSM technology to being at the forefront of 5G network deployment, the company has consistently aimed to stay ahead of the curve. They offer a wide range of devices and plans to suit different requirements from basic mobile service to high-speed data plans, and even specific services aimed towards businesses. While coverage can slightly vary depending on location—as with any mobile network in such a diverse country—AT&T is generally considered a strong performer in both urban and rural areas. The ongoing expansion and improvement of their network demonstrates their commitment to serving the connectivity needs of millions across the United States and its territories.

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