I want to know what carrier is my iphone

sheraz218 wrote:

I bought an phone 14 pro online

That is a great question to ask the person or entity that you purchased the iPhone from. Start there.

Hey there,

See>>>If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad - Apple Support

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See>>>How to unlock your iPhone for use with a different carrier - Apple Support

There is no such thing as an iPhone 14 Pro.

What did by buy and from whom?

What is the error message you're getting?

Did you buy an unlocked phone and/or compatible with AT&T's network? If so, you need to take it to an AT&T store to have them set it up to work on their network. My spouse bought an unlocked phone last yr. & it was a pain to setup it up to work on their network but the good news is he was able to do it. He has an android but I'm assuming the process is the same.