Hello. I don't live in the US so I cannot go to a Apple Store. I see Apple will be selling unlocked and contract free 5S cells but buying it for T-Mobile. The small print on apple.com website says this: If you choose T-Mobile, your iPhone comes with a T-Mobile SIM card already installed. You will need to contact T-Mobile or visit an Apple Retail Store to activate your iPhone. Question: If I buy an unlocked and contract free 5S from T-Mobile, even though said phone is to be unlocked and contract free would I always need to contact T-Mobile or visit a Apple store? I thought it was just a matter of REMOVING the T-Mobile sim and inserting my sim and all set. Any insights? Thank you!!!