About instant messaging applications
You can download instant messaging applications for your BlackBerry® device from the BlackBerry App World™ storefront. By default, your BlackBerry device comes with BlackBerry® Messenger. You can use BlackBerry Messenger to chat with people who have a BlackBerry device by sending and receiving messages and files. You can also change your status and display picture. With the BlackBerry® Groups feature of BlackBerry Messenger, you can share pictures, lists, appointments, and more.
You must have a wireless service data plan to use these applications. Depending on your wireless service provider or organization, some applications or features might not be supported.
For more information about BlackBerry Messenger and other instant messaging applications, visit www.blackberry.com/support. If you need help using an instant messaging application, you can find answers in the application by pressing the Menu key and clicking Help on your device.