I have a Blackberry curve 8330 for Metro PCS but the internet (sometimes it does, sometimes it does not) nor the applications really work for my phone because I added my old phone # into this new blackberry I have. When I try to use an application it says: "Service not enabled for this hand-held".
did you make sure the PIN is propely active on the account. it sounds more like a provisioning issue regarding your device. i would call metro to make sure your phone is properly set up on the network. once thats done, all apps and internet should work flawlessly.