Sim card swap question (V1 iPhone)

[soilsample]

Hello everyone,
I'm trying to let my son use my V1 iphone. I put the sim card from my 3gs into the phone, plugged into itunes, and restored the phone. After the restore, the phone works fine with my sim card.

Then, I install the sim card from his blackjack II into the iphone. At that point the phone shows emergency use only screen.

The phone is not jailbroken.....
It's running newest (3.1) software.

Please let me know if you can help........

Thanks
Donald

[showguy]

I Think you will need to do two things to insure every feature works fine.

1- Restore the iphone with the sim card from the blackberry
2- Call ATT&T so they can port over various settings most important being your visual voice mail.

There are different settings between the ipone and blackberry that will cause Att to get involved. I just did the same thing at a local att store. It was fast and painless.