Can I use my old SIM card in my new iPhone?
You can often switch your SIM card to a different phone, provided the phone is unlocked (meaning, it is not tied to a particular carrier or device) and the new phone will accept the SIM card. All you need to do is remove the SIM from the phone it is in currently, then place it into the new unlocked phone.
Does iPhone 12 have SIM?
I understand your concern, but it is perfectly acceptable to use your previous sim card with your new iPhone. If you want to switch sim cards to the newer sim card you will need to contact AT&T and provide them with the new sim card number so they can update your account.Oct 20, 2016
Can I put my old SIM in my new iPhone 12?
Apple's newer iPhones, including the iPhone 12, have one physical SIM slot, but they also have a digital eSIM. This makes it possible to use the phone in dual SIM mode, meaning you can have two independent phone numbers, on two networks, in one phone.Oct 20, 2020