Callcentric!

The Callcentric iPhone app allows existing Callcentric customers to place calls worldwide using their Callcentric account and save significant money over cellular carrier calling rates. This is particularly useful to customers who want to save money on international calls, or want the caller ID of their Callcentric account to show up on outbound calls they place instead of their iPhone phone number. Because of this, Verizon iPhone customers may have difficulty using the Callcentric app, especially if you are using it while not connected to Wi-Fi AND while in a 2G (1XRTT) data coverage area.