AT&T has received a waiver for its long-awaited WiFi calling feature from the FCC after it was delayed (yet again) by the lack of options for deaf users. It was already made available on a beta version of iOS 9 sometime ago, but it couldn't be launched alongside the platform, since the FCC requires services like it to support teletypewriter (TTY) for the hearing-impaired. The newer technology that the carrier wants to use with it called real-time text (RTT) won't be available until 2016. In a statement posted on the company's website, senior executive vice president Jim Cicconi said that while they're all grateful their request was granted, they're still wondering why T-Mobile and Sprint were allowed to offer WiFi calling without a proper waiver from the commission.