I was in singapore when I had problem with my iPhone 4, they basically did the same thing. I called their int'l support line for assistance, scheduled a time to visit their local service center (cause my schedule was packed and I didn't want to waste my time if it wasn't definite) and they had a refurb unit waiting for me when I get there.

The whole deal took less than 15 minutes, including testing the new device... which basically looks like a new unit to me. Including pristine screen and glass back, still protected with the peel-off plastics.