TheToolman: I also have a 2G with a supaprepay card, and no edge. I went to a Vodafone shop today and they told me that data is enabled on all prepays but the import 2G uses "compressed" data so can't work. Sounded like crap to me, but I have the same issue.
johnr: If your partners SIM works fine then its not the phone
PM me i can fix it easy while sitting on the couch at home