Despite FCC related delays last month, AT&T has now opened up Wi-Fi calling to all of its customers. While Wi-Fi calling had been available to users during the iOS 9 beta period, AT&T had delayed wider use due to pending approval on an FCC requirement to ensure that the new Wi-Fi calling feature can reliably accommodate the hearing impaired. The carrier was officially granted the waiver this week, enabling Wi-Fi calling for all subscribers…
