Is a contract attached to the sim?

It sounds so dumb, but I'm super paranoid so hear me out. I got my iPhone a year ago with a 24 month contract (unlimited texts, data and 500 minutes). I want to buy a new phone, and I'm just ensuring that when I get one, my contract will still be fine. Like - I could put the sim into the new phone and my contact would work the same and at the end of next year I could still get my upgrades. Would it work? Would I still get my upgrade?

Yes, the SIM is attached to the contract not the phone. So as long as you keep paying for your contract the SIM will work in any phone it fits in. You can even change the SIM if need be and get your number and contract ported across to it; that's essential if you want to use a contract attached to a microSIM in a phone designed to take a nanoSIM.

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