To others reading this thread:
Set up "Find my iPhone" right away. Before you lose your iPhone.
It was really convenient for me. Even though it turned out the iPhone was just behind a cushion in my living room chair.
call your provider and tell them the iemi nuber at least you will kill the phone next one you get sign into icloud activate find my iphone and you should get it back in theory
At least the thief wont be able to use it as a phone