<p>BlackBerry's free Messenger service is being expanded to work with iOS and Android devices.</p><p>Analysts regarded the move -- announced today at BlackBerry Live -- as mostly positive, since it could help an improving BlackBerry expand its reach beyond its own new Z10 and Q10 smartphone customers.</p><p>Today, there are 60 million BlackBerry Messenger (BBM) customers, a tiny fraction of the number of messages sent via Facebook or Twitter. But BlackBerry CEO Thorsten Heins said BBM users are very active, sending 10 billion messages a day, and half the messages received are read within 20 seconds.</p><p>Opening up BBM to iOS 6 devices and above and Android Ice Cream Sandwich devices and above will expand BBM's reach, Heins said.</p><p><a href="http://www.cio.in/news/blackberry-messenger-expanding-ios-and-android-407822013">Keep reading...</a></p>