AT&T has launched a new app to allow its customers to make inexpensive international calls over Wi-Fi. With the AT&T Call International app, customers can get the "lowest international calling rates" that AT&T offers.
Calls to the UK, for example, cost $0.04/minute for calls to wireline numbers and $0.27/minute for calls to mobile phones. Calls to China are $0.04/minute. The price list for all countries is available here.
Pricing is competitive with other VoIP calling apps like Vonage -- though having a major name like AT&T stand behind the app may make some users more comfortable than making calls with a lesser known name.
Within the United States, calls are placed like a normal cellular call -- no Wi-Fi required, and a nice feature compared to making calls on other VoIP apps -- but outside the U.S. all calls are placed only via Wi-Fi.
The AT&T Call International app is free to download -- call charges are applied to a credit card, not the user's AT&T phone bill, with no monthly fee or minimum charges.