Unlock my phone sim number

Click on the link to read Apple's support article on how to unlock your iPhone for use with a different carrier. - How to unlock your iPhone for use with a different carrier - Apple Support - Only some carriers offer the ability to unlock iPhone for use on any carrier. Follow the instructions in this article to unlock your iPhone.

If that's not what you meant, see this document about a locked SIM message --> Use a SIM PIN for your iPhone or iPad - Apple Support

If your SIM is locked then you will need the code used to lock it. If you do not know it, go to your carrier and ask for a new SIM.

No one here or at Apple (this is a user to user only forum) can unlock your phone to work with a different carrier. ONLY the carrier the phone is locked to can unlock it.

You'll need to work with the Carrier directly as Apple cannot and does not unlock phones.

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

Note the words in the box which states: "Apple can't unlock your iPhone for use with a different carrier. Only your current carrier can unlock your iPhone."