Will a iPhone XR work on att prepaid?

I have a good plan. Unlimited Everything. The att rep wants me to switch to a post paid account what should I do. I'm getting mixed answers.

It's probably the easiest for him to set up. If you expect to finance the phone, you're going to have to lock in for 30 months.

Will it work? Yes.

Going through AT&T would likely be harder or impossible. If you buy the phone on your own, unlocked & swap your SIM into it maybe you'd get by

It will work. You have to buy the phone outright and it must be unlocked or locked to AT&T. An unlocked phone must have the correct frequencies or you will have trouble with data. You may need a different SIM ad well.

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