There are a handful of mobile virtual network operators (MVNOs) that operate over AT&T’s network. In general, these MVNOs offer coverage profiles similar to the coverage profile AT&T offers to its own subscribers. In many cases, wireless service offered by MVNOs will be much cheaper than wireless service offered directly by AT&T.
Subscribers using MVNOs that operate over AT&T’s network are likely to have lower priority than AT&T’s own subscribers. Accordingly, MVNO subscribers may experience especially slow data speeds during periods of network congestion.
List of AT&T MVNOs
|Red Pocket Mobile||200,000|
|NET10 Wireless*||3,000,000||NET10 is part of TracFone|
|TracFone||Additional subscribers may use other carriers that are part of TracFone. An América Móvil (TracFone's parent company) report covering performance in the 4th quarter of 2018 indicates the company had roughly 22 million lines in the U.S.|
|Straight Talk*||9,000,000||Straight Talk is a TracFone brand.|
|Clearway Wireless*||Clearway is a TracFone brand. I believe Clearway works with all of the Big Four networks, but I'm not confident.|