Compatible carriers include: AT&T, Sprint/Boost/Virgin, T-Mobile/MetroPCS, Verizon Wireless, C Spire Wireless, Carolina West Wireless (CWW), CellCom USA, Google Voice, U.S. Cellular, ACS/Alaska, Advantage Cellular (DTC Wireless), Aio Wireless/Cricket, Appalachian Wireless, Atlantic Tele-Network International (ATN), Bandwidth, Bluegrass Cellular, Buffalo Wireless, CableVision, Cellular Network Partnership (PIONEER), Cellular One of East Central Illinois, Chariton Valley Cellular, Chat Mobility USA, ClearTalk(Flat Wireless), Copper Valley, Coral Wireless (Mobi PCS), Cross Telephone Company (MBO Wireless), Duet IP (Maximum Communications New Core Wireless), Element Mobile (Flat Wireless), Epic Touch (Elkhart Telephone), GCI Communications Corp, Golden State Cellular, i Wireless (IOWA Wireless), Illinois Valley Cellular (IV Cellular), Immix(Keystone Wireless), Inland Cellular Telephone Company, Leaco, Mosaic (Consolidated or CTC Telecom), MTA Communications, MTPCS (Cellular One Nation), Nex-Tech Wireless, Northwest Missourri Cellular Limited, Panhandle Telecommunications Systems(PTCI), Peoples Wireless, Pine Belt Wireless, Pine Cellular, Revol Wireless USA, RINA, Sagebrush Cellular (Nemont), SI Wireless/Mobile Nation, SouthernLinc, SRT Wireless, Texas RSA 3 Ltd(Plateau Wireless), Thumb Cellular, Union Telephone Company(Union Wireless), United Wireless, Viaero Wireless, West Central Wireless (5 Star Wireless) (T-Mobile is not liable for delayed or undelivered messages).