Mobile Setup
Here's how to get Google Apps on your phone.
 Contact the Help Center
617-552-HELP (4357)
Android   iPhone   BlackBerry   Windows Phone    
Options for access
Use BlackBerry native apps (via BIS)
Sync your BlackBerry's mail, contact, and calendar apps with your Google Apps account using your mobile carrier's BlackBerry Internet Service (BIS). Follow our instructions, but for more support, please contact your mobile carrier.
Use your BlackBerry's mobile browser Access most Google Apps in your BlackBerry's  browser app. Just point the browser to, touch the app you want to use, and sign in to your Google Apps account. 
 Use Google Talk for BlackBerry®
(supported by BlackBerry)
BlackBerry provides a Google Talk client that you can download to your device here:

Then chat with your Google Talk contacts directly from your BlackBerry. Learn more