The Program is valid with most major US carriers, but not all cellular phone providers carry the necessary service to participate. Participating Carriers: AT&T, Verizon Wireless, T-Mobile/Sprint/Metro PCS, CellCom USA, C Spire Wireless, U.S. Cellular, Carolina West Wireless (CWW), Google Voice, ACS/Alaska, Advantage Cellular (DTC Wireless), Appalachian Wireless, Bluegrass Cellular, Cellular Network Partnership (PIONEER), Cellular One of East Central Illinois, Chat Mobility USA, Coral Wireless (Mobi PCS), Element Mobile (Flat Wireless), Epic Touch (Elkhart Telephone), GCI Communications Corp, Golden State Cellular, Illinois Valley Cellular (IV Cellular), i Wireless (IOWA Wireless), Nex-Tech Wireless, MTA Communications, MTPCS (Cellular One Nation), Cross Telephone Company (MBO Wireless), Duet IP (Maximum Communications New Core Wireless), Inland Cellular Telephone Company, Immix (Keystone Wireless), Mosaic (Consolidated or CTC Telecom), Northwest Missouri Cellular Limited, Peoples Wireless, Panhandle Telecommunications Systems (PTCI), RINA, Revol Wireless USA, SI Wireless/Mobile Nation, SRT Wireless, Texas RSA 3 Ltd (Plateau Wireless), Thumb Cellular, United Wireless, Union Telephone Company (Union Wireless), Viaero Wireless, West Central Wireless (5 Star Wireless), Sagebrush Cellular (Nemont), Pine Cellular, Aio Wireless/Cricket, SouthernLinc, Bandwidth, Copper Valley, Leaco, CableVision, Buffalo Wireless, Chariton Valley Cellular, Pine Belt Wireless, Atlantic Tele-Network International (ATN). T-Mobile is not liable for delayed or undelivered messages. The service is offered on an “as-is” basis and may not be available in all areas at all times and may not continue to work in the event of product, software, coverage or other changes made by your wireless carrier. Carriers are not responsible for delayed or undelivered messages. Check your phone capabilities for specific text messaging instructions. There is no fee charged to you for receiving Program messages that is payable to Idorsia or anyone acting on its behalf; however, your carrier’s message and data rates may apply depending on your individual wireless pricing plan, in accordance with your wireless customer agreement. You are responsible for all applicable taxes. Consult your wireless service provider regarding its pricing plans.