hya! is a SIP-based Soft Phone for Android Mobile to make VoIP Calls With its simple and intuitive user interface, hya! is the solution to making high quality calls for a fraction of the cost. Utilizing the latest advances in VoIP technology, you can be ensured that all your communications are secure and affordable. • hya! is a SIP-based soft phone. You can call your friends and family from hya! with lowest international call rates! And very good quality. Features • SIP-based Softphone with