Change your iPhone's phone number through your carrier, not through the phone itself

Your iPhone does not store your phone number the way it stores contacts or photos. The number is held by your wireless carrier — the company you pay for service — and linked to your SIM card or account. To change it, you contact your carrier directly, not Apple or the phone. Most carriers let you request a new number online, by phone, or in person at a store, though the process and any fees vary by company.

If you want to keep your existing number when switching carriers, that is a separate process called number porting. If you want to add a second number to the same phone, that depends on whether your phone supports dual SIM and whether your carrier offers that service.

Key Takeaways

  • Contact your wireless carrier — not Apple — to change your phone number, because the number belongs to your carrier's account, not your phone.
  • Most carriers allow you to request a new number online through your account, by calling customer service, or by visiting a store location.
  • Some carriers charge a fee to change your number; others do it free, so ask before you confirm the change.
  • If you are switching carriers and want to keep your number, you will need your account number and PIN from your current carrier to port the number over.
  • If your iPhone supports dual SIM, you may be able to add a second number through your carrier without changing your primary number.

How to change your number with your current carrier

Start by contacting your carrier directly. The three largest carriers in the United States — Verizon, AT&T, and T-Mobile — all allow you to change your number through their websites, apps, or by phone. Smaller carriers like US Cellular, Cricket, Boost Mobile, and regional carriers have similar options, though the exact steps differ.

If you go online, log into your carrier account and look for a section labeled "My Account," "Phone Number," "Services," or "Manage My Number." Some carriers put this under "Settings" or "Account Settings." If you cannot find it, call customer service — the number is on your bill or on the carrier's website. When you call, have your account number and the last four digits of the phone number associated with the account ready.

Ask whether there is a fee. Some carriers charge $15 to $30 to change your number; others do it free. If you are changing because of harassment or spam, mention that — some carriers waive the fee in those cases. Once you request the change, your new number typically activates within a few minutes to a few hours. Your iPhone will not need any adjustment; it will simply start using the new number.

Keeping your number when you switch carriers

If you are moving to a different carrier and want to keep your phone number, you need to port the number. This is a formal process managed by the carriers, not by you directly, but you initiate it with your new carrier.

Contact your new carrier and tell them you want to port your number from your current carrier. They will ask for your account number, PIN or password, and the phone number you want to port. Your new carrier then submits a request to your old carrier. The old carrier has up to one business day to approve or deny the port. Once approved, the number usually transfers within a few hours, though it can take up to one business day.

During the port, your old carrier may charge an early termination fee if you are still under contract, but the number port itself is free by law. Keep your old phone active until the port is complete, because if something goes wrong, you may need to contact your old carrier to fix it. Once the port is done, your iPhone will use the new carrier's network with your old number.

Adding a second number to your iPhone

If you want to keep your current number and add a second one — for example, a work number and a personal number — your options depend on your phone model and carrier.

Newer iPhones (iPhone XS and later) support dual SIM, which means they can hold two phone numbers at once. One number uses a physical SIM card; the other uses an eSIM, which is a digital SIM stored in the phone. Not all carriers support eSIM, so check with your carrier first. If both your carrier and phone support it, you can contact your carrier to add an eSIM to your account. Your carrier will send you a QR code or activation code that you scan in Settings > Cellular > Add Cellular Plan. The second number will then appear on your phone alongside your first.

If your phone does not support dual SIM or your carrier does not offer eSIM, your only option is to use a second physical phone or to use a calling app like Google Voice, Skype, or WhatsApp that runs over data or WiFi instead of a carrier number.

What happens to your old number after you change it

Once you change your number, your old number is released back to your carrier's pool. It may be reassigned to another customer after a waiting period, which is typically 30 to 90 days depending on the carrier. This is why you should update your contacts, accounts, and services with your new number before the change takes effect — otherwise people will not be able to reach you, and services like two-factor authentication codes may go to the wrong person.

Before you change your number, go through your accounts and update your number with your bank, insurance company, employer, doctor's office, and any other service that has it on file. Check your email and social media accounts too — if you have your old number listed as a recovery option, update it to your new number or a backup email address.

Troubleshooting a number change that did not work

If you requested a number change and it did not go through, or if you see an error message, contact your carrier's customer service. Have your account number and the date you requested the change ready. Common reasons a change fails include a past-due balance on your account, an active contract dispute, or a technical error on the carrier's end.

If you are porting a number from another carrier and the port is taking longer than expected, contact your new carrier and ask for the status. Ports can stall if the old carrier did not receive the request, if there is a mismatch in account information, or if the old carrier is holding the number due to a dispute. Your new carrier can investigate and push the port through if there is a fixable problem.

Frequently Asked Questions

Can I change my iPhone number without calling my carrier?

Yes, most carriers let you change your number through their website or app without calling. Log into your account and look for a phone number or account settings section. If you cannot find it online, calling is usually faster than visiting a store.

Will changing my number delete my contacts or photos?

No. Your contacts, photos, messages, and all other data on your iPhone stay exactly as they are. Only the phone number linked to your carrier account changes. Your iPhone will not lose anything.

How long does it take to get a new number?

A new number usually activates within a few minutes to a few hours after you request it. If you are porting a number from another carrier, it can take up to one business day. Call your carrier if it has been more than 24 hours and the change has not gone through.

Do I have to pay to change my number?

It depends on your carrier. Some charge $15 to $30; others do it free. Ask your carrier before you confirm the change. If you are changing because of harassment or spam, ask if they will waive the fee.

What if I change my number and then want to change it back?

You can request another number change, but your old number may have been reassigned to another customer by then. If it has, you cannot get it back. If the reassignment period has not passed (usually 30 to 90 days), your carrier may be able to restore it, but there is no may provide.