Participating Carriers: The service is available on AT&T, Sprint, T-Mobile, Verizon Wireless, Boost, Cricket, MetroPCS, U.S. Cellular, Virgin Mobile, ACS Wireless, Appalachian Wireless, Bluegrass Cellular, Carolina West Wireless, Cellcom, C-Spire Wireless (formerly Cellsouth), Cellular One of East Central Illinois, Cincinnati Bell Wireless, Cross (dba Sprocket), Duet IP, Element Mobile, EpicTouch, GCI Communications, Golden State, Hawkeye (Chat Mobility), Hawkeye (NW Missouri Cellular), Illinois Valley Cellular, Immix (Keystone Wireless / PC Management), Inland Cellular, iWireless, Mobi PCS (Coral Wireless LLC), Mosaic, MTPCS / Cellular One (Cellone Nation), Nex-Tech Wireless, nTelos, Panhandle Telecommunications, Peoples Wireless, Pioneer, Plateau, Revol Wireless, Rina - Custer, Rina - All West, Rina - Cambridge Telecom Coop, Rina - Eagle Valley Comm, Rina - Farmers Mutual Telephone Co, Rina - Nucla Nutria Telephone Co, Rina - Silver Star, Rina - South Central Comm, Rina - Syringa, Rina - UBET, Rina - Manti, South Canaan / CellularOne of NEPA, Thumb Cellular, Union Wireless, United, Viaero Wireless, West Central Wireless, Leaco, Nemont/Sagebrush. T-Mobile is not liable for delayed or undelivered messages.</p> <p>