Existing customers are not required to move from existing nationwide plans, but new customers are. The plans set rates each month on different wireless devices, including $40 for smartphones, and add monthly costs for data that can be shared across 10 devices. All voice and texting charges are free.

The 46 new markets going live on Thursday are: Florence, Ala.; Harrison, Ark.; Yuba City/Marysville, Calif.; Panama City, Fla.; Carrolton, Gainesville and Newnan, Ga.; Blackfoot, Idaho; Decatur/Effingham, Kankakee/Bradley-Bourbonnais and La Salle/Peru/Ottawa, Ill.; Columbus and Michigan City/La Porte, Ind.; GreaterPortland, Maine; Greenville/Greenwood, Jackson and Tunica, Miss.; Houghton and Traverse City, Mich.; Jefferson City, Lake of the Ozarks and West Plains, Mo.; Binghamton, Elmira/Corning/Hornell and Oneonta, N.Y.; Burlington, Hickory/Lenoir, Jacksonville and New Bern, N.C.; Bedford and Sharon/Farrell/Hermitage, Pa.; Anderson, Florence and Greenwood, S.C.; Lufkin/Nacogdoches, Midland, San Angelo and Waco, Texas; Danville, Va.; Ashland, Ky./Huntington, W.Va. and Logan, W.Va.; Fond du Lac, Janesville/Beloit and Sheboygan, Wis.; and Gillette, Wyo. The Lihue, Hawaii market launched June 11.

Matt Hamblen covers mobile and wireless, smartphones and other handhelds, and wireless networking for Computerworld. Follow Matt on Twitter at or subscribe to . His email address is .

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