Yes, buy a Claro SIM card, ask them for a 3G SIM (128 kbit). Don't tell them you will activate BB plan, just tell them you want a 3G SIM for future 3G use. Once in your phone, set up APN on your phone and try to see a basic page (e.g.
Google) in the inbuilt browser. Once you see that the phone's navigating fine, activate BB social. Dial *111# and follow the menu to buy BB Social, 1 day for example, RD$25 to try it out, and after it is activated, check your balance *122#, then navigate with the phone to some content-richer pages (e.g. dr1.com) and after couple of minutes check your balance again. It should be the same as before and no money should be deducted for browsing you just did.