What changing your phone number on an iPhone actually means
Changing your phone number on an iPhone does not mean editing a setting inside the phone itself. Your phone number is assigned by your carrier — the company you pay for cellular service — and lives on their network, not on your device. What you can do on the iPhone is update the phone number associated with your Apple ID, iCloud account, and other services that use your number to reach you. You can also tell your carrier you want a new number, which is a separate process that happens outside the phone.
Many people confuse these two things. If you want a completely different phone number, you contact your carrier. If you want to update where your current number is registered across Apple's services, you do that in Settings. This guide covers both.
Key Takeaways
- Your actual phone number comes from your carrier, not your iPhone, so changing it requires contacting them directly.
- You can update the phone number linked to your Apple ID and iCloud account by going to Settings, tapping your name, then Account, then editing the phone number field.
- If you switch to a new phone number through your carrier, you will need to update it in iMessage and FaceTime settings so people can reach you at the new number.
- Changing your number through your carrier may take a few hours to a few days to fully set up across their network.
- Before requesting a new number, check whether your carrier charges a fee — some do, some do not, and policies vary by plan.
Requesting a new phone number from your carrier
To get a completely different phone number, you contact your cellular carrier directly. The three largest carriers in the United States are Verizon, AT&T, and T-Mobile, but you may use a smaller carrier or an MVNO (a company that rents network space from one of the big three, like Mint Mobile or Visible). Your carrier's website usually has a phone number to call, or you can visit a physical store if they have one in your area.
When you call, tell them you want to change your phone number. Some carriers let you choose from available numbers in your area code; others assign one to you. Ask whether there is a fee — some carriers charge $15 to $30 for a number change, while others do it at no cost. The new number usually activates within a few hours, though it can take up to a business day for the change to fully propagate across their system.
Write down your new number as soon as it is assigned. You will need it to update your settings on the iPhone and to notify contacts of the change.
Updating your Apple ID phone number in Settings
Once you have a new number from your carrier, update it in your Apple account so Apple's services know how to reach you. On your iPhone, open Settings and tap your name at the top. Then tap Account. Scroll down and tap Edit next to your phone number. Delete the old number and type in the new one, then tap Done.
Apple will send a verification code to your new number. You will see a prompt asking you to enter it. Type the code into the iPhone to confirm the change. This step proves you actually own the new number and prevents someone else from changing your account information.
If you do not receive the verification code within a few minutes, tap "Didn't receive a code?" and Apple will offer to send it by a different method, such as to a recovery email address you have on file.
Updating iMessage and FaceTime with your new number
iMessage and FaceTime are Apple services that let people contact you by phone number or email. If you changed your phone number, you need to tell these services about it so incoming messages and calls route to you correctly. Open Settings, scroll down to Messages, and tap it. Look for "Send & Receive" and tap it. You will see your old number listed. Tap Edit, then tap the minus sign next to the old number to remove it. Tap Done.
Do the same in FaceTime: go to Settings, scroll to FaceTime, tap it, then tap your phone number and remove the old one. Both services will now use your new number to identify you.
Tell your contacts about your new number through a text, email, or phone call so they can reach you. If they try to text or call your old number, the message or call will not reach you.
What happens to your old phone number
Once your carrier deactivates your old number, it goes back into their pool of available numbers. After a waiting period (usually 30 to 90 days, depending on the carrier), it may be assigned to someone else. This is why it is important to update your number everywhere — banks, employers, doctors, and any service that uses it to verify your identity.
If you signed up for two-factor authentication on accounts using your old number, update those accounts with your new number as soon as possible. Two-factor authentication sends a code to your phone to prove it is really you logging in. If the code goes to your old number and someone else now has it, they could potentially access your accounts.
Keeping your old number when you switch carriers
If you are switching to a different carrier and want to keep your current phone number, you can use a process called number porting. Contact your new carrier and tell them you want to port your number from your current carrier. They will ask for your account number and PIN from your old carrier — you can find these by logging into your old carrier's website or calling their customer service.
The new carrier will handle most of the process, but it usually takes a few days. During this time, your old carrier may cut off service before the new carrier activates it, so plan accordingly. Once the port is complete, your number will work on your new carrier's network, and you will follow the same steps above to update it in your Apple ID and iMessage settings.
Troubleshooting when your number will not update
If you enter your new number in Settings and the verification code does not arrive, first check that you typed the number correctly — including the area code. If it is correct, wait a few minutes; sometimes the code takes longer to send. If it still does not arrive, tap "Didn't receive a code?" and choose to receive it by email instead.
If you see an error message saying the number is already in use, it usually means the number is registered to another Apple ID. This can happen if you recently switched devices or if someone else set up an account with that number. Contact Apple Support by going to Settings, tapping your name, then Account, then Help, and selecting Contact Apple Support. They can investigate and help you regain access.
Frequently Asked Questions
Can I change my phone number without contacting my carrier?
No. Your phone number is assigned and managed by your carrier's network. You can only update it in Apple's services, but that does not change your actual phone number. To get a new number, you must contact your carrier directly.
Will changing my phone number affect my contacts or photos?
No. Your contacts and photos are stored on your iPhone or in iCloud and are not tied to your phone number. Changing your number will not delete them. However, you should notify your contacts of your new number so they can reach you.
Do I have to change my Apple ID password when I change my phone number?
No. Your Apple ID password and your phone number are separate. Changing one does not require changing the other. However, if you use your phone number as a recovery method for your Apple ID, updating it is a good security practice.
What if my carrier charges a fee to change my number?
Fees vary by carrier and plan. Some carriers charge $15 to $30, while others do it free. Ask your carrier about their policy before requesting the change. If the fee seems high, you can ask whether they will waive it, though they are not required to.
How long does it take for my new number to work everywhere?
Your carrier usually activates the new number within a few hours, but it can take up to a business day for it to fully work across all their systems. Once activated, update it in your Apple ID, iMessage, and FaceTime settings right away. Text and call a friend to confirm it is working.