Ringbery Dialer is a mobile app for Android and other smartphones, offering high quality VoIP Calls, from data enabled mobile phones (3G/4G or WiFi). For using this app, end users will need an SIP account, which they can obtain from a Ringbery.
Features: VoIP Calls Wifi, 3G / 4G, edge or UMTS. Free calls between Ringbery users Works in all Countries and all Networks across firewalls. Smooth voice quality Echo cancellation Uses very less bandwidth.