AT&T exec Ralph de la Vega also says he expects customer turnover to remain near record-low levels in the current quarter.
Sprint customers traveling overseas get a boon with the carrier's added Wi-Fi calling feature, starting with the Galaxy S4.
iOS 8's support for Wi-Fi calling means that iPhone owners will finally get in on a feature that Android and Windows Phone owners have had for years.
The Samsung smartphone marks the fourth Sprint device to receive the free calling capability.
Sprint's new service lets subscribers use Wi-Fi hot spots to make phone calls and send text messages. The move should help improve coverage for Sprint customers, especially indoors.
Enhance your Google Voice experience by using one of these Android apps to make calls over Wi-Fi.
The Kirlian Device shines a light in different colours depending on Wi-Fi signal strength, allowing creator Luis Hernan to create paintings in light.
The carrier has confirmed that the Google Nexus 5 will not support voice over a Wi-Fi network.
Whatever your reason to seek out a Wi-Fi calling app, this handful rises to the top.
The latest update to RIM's BlackBerry Messenger adds voice support, so people can call their contacts over a Wi-Fi connection.