It just shows "Unknown Number" when I get a call from anyone. No contacts on my SIM. No duplicates in my address book. I have already done a flash of the OS. with Maemo Flasher 3.5. I am on Viaero service in the midwest. When I manualy set my network to AT&T the caller ID works. I have already contacted my service provider and talked with their network operations lead tech. He says it is a phone issue. When I put my SIM back in my old phone the caller ID works. Any help?

dj