If you switch from a BlackBerry device running the BlackBerry OS (version 5.0 to 7.1), you should update to the latest
available version of BBM and associate BBM with your BlackBerry ID before you switch devices.
To see which version of BBM is running on your previous device, look for BlackBerry Messenger in your list of
To download BBM 7.0 or later on your previous device, visit the BlackBerry World storefront or
If you can't update your version of BBM, in BBM, press the
key > Options > Back Up. Select a backup option.