My blackberry bold 9780 used to be with Rogers but we stopped the plan and I had it unlocked. Now there is a Fido sim in it, and unlimited social networking and IM, but it won't work & continuesly says "Data unavailable". I asked the store & they said it may be because it's an unlocked phone & is still working on Rogers settings so won't work with Fido. How can I fix this issue? Greatly appreciate it.