BlackBerry offers a free application for Enterprise Activation. This is recommended for use with BlackBerry Cloud Services (BBCS) or BES Express users that have a BlackBerry Internet Services (BIS) plan, but do not require a BlackBerry Enterprise Services (BES) data plan.
Browse to the BlackBerry App World and login using the BlackBerry User ID to obtain the Enterprise Activation Application.
Once you have arrived at the link, select Download.
The free Enterprise Activation application download enables activation of BlackBerry for use with Enterprise Server Express Access.
Note: In some cases, an update of the BlackBerry World application market may be required, and at times a software update for the BlackBerry device, as well. The app should prompt for such updates automatically, if needed.