
Wi-Fi calling – the iPhone feature Apple introduced in iOS 8 – is a really handy feature, routing phone calls over Wi-Fi when the mobile signal is poor or non-existent. There’s just one problem: it’s illegal for U.S. carriers to support the feature because it breaks the TTY text-chat protocol used by some hearing-impaired users. AT&T asked the FCC to grant it a waiver to switch on the service, and now Verizon has done the same.
The two companies have, however, adopted different positions on the service … expand full story