You must have heard about the bbm(Blackberry messenger) for the Blackberry but it is also true that a monthly rental has to be paid to avail the service and the text messages can only be sent from one Blackberry to another.
But there’s something new now. Without any monthly fees and also you can send messages from Blackberry to Apple iPhone and vice-versa.
All you need to do is-
1 Download the Whatsapp application for your iPhone or Blackberry. Both phones need to have the app to send and receive free text messages. The app is free in the Blackberry app world and costs 0.99$ in the Apple app store.
Download link for Blackberry –http://www.whatsapp.com/ota/ (You need to download it from your Blackberry.
Download link for Apple iPhone- http://itunes.apple.com/app/whatsapp-messenger/id310633997?mt=8
2. But to use this you need internet connection in your phone(GPRS,WIFI,3G,EDGE)