Pogo is a simple to use SIP softphone for iPhone and iPad that can be customized on demand. Allowing users to easily register on a VoIP system, the Pogo Softphone can be used with a large number of SIP-compatible VoIP service providers. You can call on WiFi and 3G networks from anywhere in the world. Pogo Highlights: 1. Compatible with any SIP-based Softswitch 2. Connectivity through WIFI/3G/EDGE 3. Outgoing Incoming VoIP Calls 4. iPhone Address Book Integration 5. Call History 6. Work in Background Mode 7.Excellent Voice Quality through supported Audio Codecs G711a, G711u, G722, GSM, Speex. 8. Easily Configurable Settings 9. Bluetooth Headset Support 10. Call Display11. Speakerphone, Mute and Hold Functions 12. Call Recording 13. Favorites/Speed Dial 14. Hold/Resume/Redial Notes: Because the Pogo Softphone is a SIP client, it must be used with an existing VoIP service in order to make calls. Please ensure your VoIP providers service supports SIP clients. Please check with your network operator before enabling the VoIP over 3G app. Some mobile network operators may prohibit or restrict using VoIP over their networks, or they may impose additional charges.