Available on the select Sprint® Android devices running on OS 2.1 or higher: Samsung Epic? 4G, Samsung Galaxy S? II, Epic? Touch, Samsung Galaxy S® III, Galaxy Nexus, HTC EVO? 4G, HTC EVO Shift? 4G, HTC EVO? 3D, HTC EVO Design 4G?, HTC EVO? 4G LTE, LG Optimus S?, LG Marquee?, LG Viper? 4G LTE, Sanyo Zio?, Kyocera Echo?, Kyocera Milano, HTC EVO? 3D, Motorola PHOTON? 4G, Motorola Admiral, Samsung Conquer? 4G, Nexus S? 4G from Google and Samsung Transform? Ultra for Sprint customers only. Sprint Mobile IP Relay is a free app available for people who are Deaf, Hard of Hearing or have a speech disability to place relay calls and communicate using text on android devices running 2.1 or higher. This app is only available on the Sprint network and is not available through other wireless carriers. Connect with a qualified relay operator via Sprint Mobile IP. Features include integrated contact list, call history, and access to live customer service. Available only in USA and US territories. International calls will either be blocked or terminated. Registration is required to use this app. If no data plan service selected, casual data charges may apply. Learn more at www.sprintip.com. Although Sprint Mobile IP can be used for emergency calling, such emergency calling may not function the same as traditional 911/E911 services. By using Sprint Mobile IP for emergency calling you agree that Sprint is not responsible for any damages resulting from errors, defects, malfunctions, interruption or failures in accessing or attempting to access emergency services through Sprint Mobile IP whether caused by the negligence of Sprint or otherwise.