Mobile providers in Canada and around the world are walking around with a proverbial “pebble” in their shoe and could save millions of dollars each month when advancements in LTE wireless technology inevitably allow them to take it out, technology experts and industry insiders say. Once touted as the future of mobile communications, voice over LTE—or VoLTE—has been largely “ignored” by network operators for much of the past four years as they focused on catering to consumers’ increasing demand for better and faster data services. As a result,...