I have a Dell XCD35.
My phone book was showing phone contacts as well as SIM contacts.
So when I see the list it shows some contacts twice. I don't want that, so in
display option of contacts I just unchecked SIM contacts, which solves the problem in the Contacts app.
But I face the same problem when I am composing a SMS message. When searching for contacts it shows both Phone and SIM contacts.
Is there any way to disable SIM Contacts everywhere?