AT&T previously decided of blocking the app FaceTime on mobile. However, recently AT&T Senior Vice President for Regulatory Affairs Bob Quinn blogged in order to guard its new plans of limiting the use of app supported by Apple and suggested that only the consumers on its network, who are using its Mobile Share plans can benefit from the app.

Despite the declaration, consumer advocates have raised concerns and stated that leader in telecommunication services is breaching the rules claimed under Federal Communications Commission's Open Internet. FCC has highlighted under its established rules that the internet is to be kept open.

AT&T's latest proposal is a clear violation of Net Neutrality and a serious test of whether the Federal Communications Commission will protect mobile users," Craig Aaron.

It was last week, when the services announced that their 3G and 4G networks will be supporting the video chat app FaceTime, which is launched in all iPhone 4 devices and newer iPhones.

Initially the app could only be run using Wi-Fi networks. However, after when Apple launched its upgraded version iOS 6 operating system, even cellular networks supported the app.

However, the recent declaration by AT&T of allowing only those consumers that are using its new Family Share plans to access the app, has raised controversies.