How to Change Your Phone Number on iPhone

To change your phone number on an iPhone, ask your mobile carrier to assign the new number first. Editing a number in iPhone Settings does not change the carrier-assigned number; after the carrier completes the change, update Apple services and every account that still uses the old number.

What does changing your iPhone phone number mean?

“How to change your phone number on iPhone” can refer to three different tasks, and only the carrier can complete the first one:

• Change the carrier-assigned number: The carrier replaces the mobile number connected to your SIM or eSIM. A SIM is a physical card, while an eSIM is a digital mobile-service profile stored on the iPhone.
• Update the number displayed in Settings: The iPhone may show a number stored on the SIM or supplied by the carrier. Editing that display, when editing is available, does not give the phone a new mobile number.
• Update Apple services: iMessage, FaceTime, and the trusted numbers on your Apple Account may continue to list the previous number until activation and verification are complete.

If you are asking, “How do I change my phone number on my iPhone?” start with the carrier. The remaining steps make the new carrier-assigned number appear and work correctly across the iPhone.

How do I request a new iPhone number from my carrier?

Contact the carrier that provides service for the iPhone and ask to change the mobile number on the line. The account holder may need to approve the request.

Before contacting the carrier, have the following information ready:

• The account holder’s name and account details.
• The current phone number and the line that needs to change.
• Any account PIN, passcode, or identity information the carrier requests.
• Access to the iPhone, its SIM or eSIM details, and another contact method if service is interrupted.

Ask the carrier when the old number will stop working and whether the iPhone needs to be restarted or its mobile-service profile refreshed. Procedures vary, so follow the instructions given for that account and line.

How do I update the phone number shown in iPhone Settings?

After the carrier confirms the change, restart the iPhone and make sure it connects to the carrier’s mobile network. Then review the number displayed by the device.

1. Open Settings.
2. Select Apps, then Phone. On some iOS versions, Phone appears directly in Settings.
3. Look for My Number and confirm that it shows the new number.
4. If the field can be edited, enter the new number and save it.

Changing My Number only corrects the number displayed on the iPhone. It does not change the number assigned by the carrier. If My Number cannot be edited or keeps reverting, ask the carrier to check the SIM or eSIM information.

How do I update iMessage and FaceTime with the new number?

iMessage and FaceTime must activate the new number through the mobile line before it can be selected for messages and calls. Keep the iPhone connected to the carrier network during activation.

1. Open Settings, select Apps, then Messages.
2. Make sure iMessage is on, then open Send & Receive.
3. Confirm that the new number appears and is selected under the addresses used to receive and start conversations.
4. Return to Apps, select FaceTime, and confirm that the new number appears and is selected.
5. Remove or deselect the old number only after the new number is active.

If the new number remains unavailable, turn iMessage and FaceTime off, restart the iPhone, and turn them on again. Do not repeatedly change settings while the carrier line itself is still inactive.

How do I change the trusted phone number on my Apple Account?

A trusted phone number is a verified number Apple can use to deliver security codes and help confirm your identity. Add and verify the new number before removing the old one so that account recovery remains available.

1. Open Settings and select your name.
2. Open Sign-In & Security, then find the trusted phone numbers section.
3. Choose the option to add a trusted number.
4. Enter the new number and select an available verification method.
5. Enter the verification code when it arrives.
6. Confirm that the new number is listed as trusted before deleting the previous number.

If you cannot receive a code at either number, use another trusted device or the account-recovery choices shown on the sign-in screen. Removing the only working trusted number can make later access more difficult.

What should I do if the old phone number still appears?

An old number may remain visible because carrier activation is incomplete, the SIM or eSIM still contains outdated information, or an Apple service has not refreshed.

1. Confirm with the carrier that the new number is active on the correct line.
2. Restart the iPhone and test a mobile call or message using the new number.
3. Check Settings for a carrier-settings update if the iPhone presents one.
4. Review My Number, iMessage Send & Receive, FaceTime, and Apple Account trusted numbers separately.
5. If the iPhone has more than one SIM or eSIM, confirm that you are reviewing the intended line.
6. If the old number returns after an edit, contact the carrier about the SIM or eSIM profile.

Activation can require time to move through the carrier and Apple services, but no specific completion time is guaranteed. If calls or messages fail, focus first on restoring carrier service rather than repeatedly editing the displayed number.

What should I update before I stop using the old number?

Before the old number is disconnected, identify every account that uses it for sign-in, security codes, password recovery, or alerts. Update important accounts while you can still receive messages at both numbers.

• Add the new number to email, financial, government, health, work, school, and social accounts.
• Update two-factor authentication, which is an extra identity check required after entering a password.
• Save backup codes or add another approved verification method where an account offers one.
• Tell important contacts that your number has changed.
• Update emergency-contact records, shared family information, and any service that sends appointment or account alerts.
• Check apps and websites for the old number instead of assuming the iPhone change updates them automatically.

Changing a phone number on an iPhone is complete only when the carrier line, iPhone display, Apple services, trusted-number settings, and outside accounts all use the correct number.