GoYap Mobile for iOS is a SIP-based unified communications softphone for Apple iPhone that uses a Wi-Fi or cellular data network connection to make and receive voice and video calls, send messages and see user presence. Extend your organization’s PBX, enable a BYOD solution, or save money on calling plans using a hosted voice service – GoYap Mobile puts business-class communications tools in your pocket so no matter where you are in the world, you stay connected. GoYap can allow you to use your mobile using GSM when you have poor data or no coverage.