Unlock my IPhone

It is not possible.

Contact the store/retailer and ask which carrier the iPhone is locked to.

See this Apple article: How to unlock your iPhone for use with a different carrier

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

• Apple can't unlock your iPhone for use with a different carrier. Only your carrier can unlock your iPhone.

No. Only the carrier it is locked to can unlock it.

Did you buy a used iphone from someone? If so, ask them who it’s locked to. If you can’t do that, call AppleCare and give them the serial number. They should be able to tell you.

If it’s locked to a US carrier and you are not a current or former customer of that carrier, it is unlikely that it can be unlocked.

No, please.

No, you will need to know the carrier as they are the only one who can unlock it.