Wrong carrier name displayed

A friend of mine today reported the following behavior.

He had a sim installed from a carrier named SETAR and it showed (correctly) SETAR in the upper left corner. (the phone works fine)
Then he changed the sim into DIGICEL and it showed (correctly) DIGICEL in the upper left corner. (the phone works fine)
Finally he changed the sim back to SETAR but the upper left corner keeps on displaying the DIGICEL carrier name. (but the phone still works fine)

He already tried re-inserting the SETAR sim and rebooted the phone, but it keeps on displaying DIGICEL, while actually working with the SETAR sim. Also he tried to choose SETAR form the SETTING | CARRIER menu but that doesn't make any difference.

Anyone knows why?

The proof ... Steve bricked the first unlocked phone... :D

Now its time to start the war :eek:

Ciao
Armin

I have the same issue, even after complete iphone restore.
Anyone?

Thx

mine switches to rogers when im actually using fido (they share the same network) and usually turning it off fixes it, iv come to just ignore it and it fixes it self.