Article Photos: RIM offers free voice calls over Wi-Fi with BBM 1/1

  FILE - In this Oct. 12, 2011, file photo, A Blackberry subscriber holds a Research in Motion Blackberry in Ottawa. 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. announced Wednesday that itâs adding the feature to BBM. Users will be able to switch back and forth from a text chat to a(AP Photo/The Canadian Press, Adrian Wyld)