Patrick bought a Samsung Galaxy S9 at Best Buy for Black Friday. Can he just drop his SIM card in or does he have to get it activated? Leo says he should just be able to drop his existing SIM into it and get started. Leo says that the FCC doesn't like carrier locks if the carrier isn't subsidizing the phone. So all he'll have to do is call the carrier and ask them to unlock it, if he needs to. But if he's a Verizon customer, it shouldn't be locked at all, and since he's not switching carriers, it should work if it uses the same SIM. If it doesn't fit, he'll need to go to his carrier store and ask for a new one.