BlackBerry has started rolling out a new version of its popular instant messaging app BBM, which allows Android and iPhone users to make free voice calls to other BBM contacts.

BBM users on Android and iPhone will now be able to make free voice calls to BBM contacts over a Wi-Fi or cellular data connection with BBM Voice, as well as access BBM Channels, a broadcast service, BlackBerry said in a statement.

The free voice call feature is already available for Blackberry handset users.