Device Index Calling

T-Mobile Rolls Out Free Facebook VoIP Calling

MobileBurn: Carrier planning additional Facebook tie-ins as well.

AT&T to Offer Unlimited Mobile to Mobile Calling

BGR: Starting tomorrow, AT&T subscribers will get to enjoy what Sprint customers have enjoyed for a while now, for a fee--of course.

Go VoIP to Save Cash When Mobile

Using Wi-Fi to make voice over Internet Protocol (VoIP) calls on a smartphone has the potential to save a significant amount of money for small businesses and large enterprises alike. And thanks to the high level of integration of the technology in many devices, not to mention the variety of services out there, VoIP can start saving you cash right away.