The wireless carrier is expanding its existing Wi-Fi calling and texting service with promises of more coverage in the home and in the air.
The smartphone feature is useful when customers find themselves in an area with weak or no carrier coverage.
AT&T customers with the new iPhone 6S and 6S Plus, as well as last year's iPhone 6 and 6 Plus, can now make calls over Wi-Fi.
AT&T customers, rejoice; Wi-Fi calling is available on your iPhone with iOS 9. Here's how to enable it.
If successful, the limited time project will become generally available in September.
Curious about Wi-Fi calling and what it entails? CNET has the rundown on what you need to know.
Four of Apple's iPhones will be able to take calls over Sprint's Wi-Fi networks, a boon if your signal -- or minutes -- are running low.
The company, which already offers free mobile phone service via Wi-Fi networks, is trying to make a name for itself with the introduction of a $99 Android handset.
The low-cost waterproof smartphone joins a growing roster of devices capable of making phone calls over Wi-Fi.
CNET editor Dong Ngo explains how Wi-Fi calling works with the latest smartphones, including the iPhone 6 and 6 Plus, and picks the top five routers that are best for this technology.