| | Re: why my 9780 GPS not working?please help
data plan is what you need to browse the web, get e-mail and make most of the 3rd party apps work. Otherwise, the only things that will work on your BB will be SMS text, MMS and phone. If you had to ask what a data plan was, chances are you don't have one.
At least 17+ different BB's since 1999 -- too many to list...