iVoip Dialer - VoIP SoftphoneBy Saba Communications ( Free )
iVoIP Dialer is a VoIP Softphone to make VoIP call from the Android Phones & Tablets. It works over Wi-Fi/3G/4G/EDGE. iVoIP Dialer support high quality audio & video codecs like, G729, G711a, G711u, g722, VP8, ...