In order to have access to the Internet and blackberry messenger services, you must have the blackberry add-on. This costs £3 and must be bought at the same time as buying your goodybag. The add-on gives blackberry members Internet and blackberry messenger services.
Blackberry Addon 1010: http://giffgaff.com/blackberry-add-on
If You do not have the blackberry add-on, you can browse the Internet by downloading Opera Mini on to your phone:http://j.mp/bboperamini
You will need to have access to Wifi in order to do this.
See this guide on how to giffgaff a blackberry:http://bit.ly/giffgaffblackberry
Go to home screen and select Options, then Device, then Advanced System Settings > TCP/IP
Enter the APN : giffgaff.com
user name: giffgaff
Press the BB Menu key and select Save.
Other phone guides:
How to giffgaff an iPhone 4: http://bit.ly/giffgaffiphone4
How to giffgaff an iPhone 3G/3GS: http://bit.ly/giffgaffiphone
Guide to Windows Mobile 6.1 phones: http://bit.ly/giffgaffwindows