Connect to 2talk over your mobile 3G or 4G network or from any WiFi zone and calls over the internet from your iPhone or iPad.
The 2fone App comes with many great features including:
High Definition Voice Calling (G722 Codec)
High Definition Video Calling (H264 Codec)
Secure encrypted voice calling
Conferencing and 3 way calling
Call Transfers
Ability to use your existing contacts list
Mute
Speakerphone
DTMF
Support for Wifi, 3G and 4G networks