I can help you get back your contacts, depending on the circumstances.
If you saved them to your sim card you can copy them back over onto the phone by doing the following:
Menu > Contacts > More > Options > Sim Contacts
Now if there's nothing there then there will be no need to follow this next step because there's nothing there to copy over.
Menu > Contacts > More > Options > Advanced > Copy From Sim
Sorted
However it all depends if you backed up everything to your sim.
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