Apple iPhone's VOIP to use 3G connections – Wireless Federation (blog)

CNET
Apple iPhone's VOIP to use 3G connections
Wireless Federation (blog)
Earlier, VoIP calling has been available on the iPhone, but only over WiFi connections, which don't have the range of 3G cellular networks. …
AT&T Beefs Up 3G Network with Billions in UpgradesVON
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