Can I unlock a blackberry and still get data like BBM and facebook?

Ok so koodo has this offer that gives u a blackberry for 0$ with a yr contract and theres an offer that gives you 100$ giftcard with it too. So say i get the blackberry alone with a 3 yr contract and use the 100$ plus another 50$ to buy the phone. Can i then unlock it and use it as a pay per use phone? would it still have data like bbm?