RIM offers free voice calls over Wi-Fi with BBM
BlackBerry users will be able to make free voice calls over a Wi-Fi network using the popular BBM messaging service. Research In Motion Ltd. said Wednesday that it is adding the feature to BBM. Users will be able to switch back and forth from a text chat to a voice call. A split-screen option will let them talk and text at the same time. The feature is a free update for existing customers and comes months before RIM introduces its new BlackBerry 10 smartphones, which are seen critical to RIM’s survival.