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As Wi-Fi calls come to smartphones, networks get ready to carry them
Wi-Fi may carry many voice calls within the next few years, but the technology required to make those calls is still young in some ways.Mobile subscribers have been talking and doing video chats over Wi-Fi for a long time using Internet-based services such as Skype. Now carriers are offering ways to call up friends and family over wireless LANs using their regular phone numbers.Wi-Fi calling made a splash last year when the iPhone 6 came out with the capability, though a number of Android and other devices also have it. T-Mobile USA and Sprint both allow Wi-Fi calling with selected smartphones. AT&T and Verizon, as well as EE in the UK, plan to follow.To read this article in full or to leave a comment, please click here