The wireless carrier appears to have quietly begun nationwide support for the videoconferencing app on its cellular network in various states across the country.
AT&T says it will allow all its tiered-data customers regardless of whether they have 3G or 4G iOS devices to use the FaceTime video chat service over its network. But it's still restricting unlimited-data users.
The carrier had previously said that it would open FaceTime only for those who have a 4G LTE device and have a mobile data sharing plan.
Verizon will migrate voice services from older CDMA network to LTE by year's end, enabling video calling, other features.
AT&T previously limited cellular access to the video chat feature to customers in its Mobile Share family data plan.
Roberto Garcia, the Apple engineer who created FaceTime, testifies that the video calling feature came out of work done for Game Center.
After defending itself against claims that it violated Apple's patents for the iPhone, the Korean electronics maker accused its smartphone rival of violating two Samsung patents.
The chairman of the Federal Communications Commission hinted that the commission would review complaints filed against AT&T over the iPhone video-chat feature, according to a report.
Three public interest groups say they're filing a formal complaint against AT&T with the FCC for its policy on FaceTime over 3G.
Consumer advocates have accused AT&T of violating FCC rules by requiring Apple FaceTime users to subscribe to the carrier's Mobile Share plans. In a blog post, AT&T defends its position.