Right now the Sim-Free Model is not yet available in the U.S. So even if you ask them you want an unlocked version, they are going to ask which carrier. Just tell them you want the AT&T/T-mobile model but buying it as Device only. Technically speaking any phone purchased full price at the Apple store or apple.com unlocked. Now does India have CDMA Network? If it does not that T-mobile or AT&T model will do just fine.