Why you might want to change your phone number

You change your phone number when you switch carriers, move to a new area code, or want to stop receiving unwanted calls and texts. The process itself is straightforward — your carrier handles it — but the harder part is updating everywhere that number is tied to your accounts. Your phone number is often the key to resetting passwords, receiving security codes, and proving your identity to banks and services. Change it without updating those places, and you can lock yourself out of your own accounts.

From a security angle, changing your number can help if you are being harassed or if your number has been compromised. It also matters if you are switching to a new carrier or moving to a different region. The timing and order of your updates determine whether you keep access to your accounts during the transition.

Key Takeaways

  • Contact your current carrier to request a number change; most carriers allow this online, by phone, or in person, and the process usually takes a few hours to a few days.
  • Before you change your number, write down every service that uses it for login recovery or two-factor authentication — your email, bank, social media, and work accounts are the priority.
  • Update your phone number in each account's security settings before the old number stops working, because you will not be able to receive the verification code if you wait.
  • If you miss updating an account and get locked out, contact that service's support team with proof of identity; most can verify you through other means like a security question or ID document.
  • Keep your old phone number active for at least a week after the change so you can receive any stray verification codes or alerts from services you forgot to update.

How to request a number change from your carrier

Contact your carrier directly — Verizon, AT&T, T-Mobile, or whoever you use. Most carriers let you request a number change through their website, their mobile app, or by calling customer service. Some carriers charge a small fee (usually $15 to $30) for a number change, though some waive it if you have been with them for a long time or if you are changing for security reasons. Ask about the fee before you confirm the change.

The carrier will assign you a new number and set up it on your account. This usually happens within a few hours, though it can take up to a business day. Your old number will stop working once the new one is active. Some carriers give you a grace period of a few days where both numbers work; ask your carrier whether this applies to you.

Write down your new number as soon as you receive it. You will need it to update your accounts, and you will also need to give it to people who contact you regularly.

What to update before your number changes

Make a list of every account that has your phone number on file. Start with the ones that matter most: your email account, your bank, your work account, and any service that uses your phone number for two-factor authentication (the code you receive by text when you log in from a new device). Social media accounts, streaming services, and shopping sites come next. If you use your phone number to receive alerts from your utility company or your doctor's office, add those too.

For each account, go into the security or account settings and look for a section called "Phone Number", "Contact Information", or "Two-Factor Authentication". Replace your old number with your new one. Most services will send a verification code to your new number to confirm the change — you will need to enter that code to complete the update. Do this while your old number is still active so you can receive the code.

If an account requires you to verify the change by entering a code, and you do not receive it, wait a few minutes and request the code again. If you still do not receive it, contact that service's support team and explain that you are changing your phone number. Many services can verify you through other methods, like answering a security question or uploading an ID.

Updating your email account first

Update your email address first, because your email is the master key to everything else. If you get locked out of another account, you can usually reset your password by receiving a link in your email. If your email account itself is tied to your old phone number, you could lose access to that recovery method.

Go to your email provider's account recovery or security settings. For Gmail, this is in the "Security" tab on the left side of the settings page. For Outlook, it is under "Account" and then "Security". For Yahoo, it is under "Account Security". Add your new phone number and remove your old one. You will receive a verification code on your new number; enter it to confirm.

After you update your email, you can use it to reset passwords on other accounts if you forget to update them before your number changes.

What to do if you get locked out of an account

If you changed your number and forgot to update an account, you will not be able to receive the two-factor authentication code when you try to log in. You will be locked out temporarily, but this is not permanent.

Look for a link that says "Can't receive codes?" or "Having trouble signing in?" on the login screen. This usually takes you to a recovery page where you can verify your identity through other means — a security question you set up earlier, a backup code you saved, or a photo of your ID. Different services use different methods. If none of those options work, contact the service's support team and explain that you changed your phone number and cannot receive codes. They can verify you through your email address, your account history, or other information only you would know.

This process usually takes a few hours to a day. It is slower than updating your number before the change, which is why updating ahead of time matters.

Keeping your old number active during the transition

Ask your carrier whether you can keep your old number active for a few days after your new number is turned on. Some carriers allow this; others do not. If your carrier allows it, keep the old number active for at least a week. This gives you time to catch any services you forgot to update and receive their verification codes.

During this grace period, you will receive texts and calls on both numbers. You can use the old number to receive codes from services you missed, then go back and update those accounts with your new number. Once you have updated everything, you can ask your carrier to disconnect the old number.

If your carrier does not allow both numbers to be active at once, ask them how long the old number will remain in the system before it is reassigned to someone else. Some carriers hold old numbers for 30 to 90 days. If a service sends a code to your old number during that window, you might still be able to receive it if you still have access to that phone or SIM card.

Telling people your new number

Send a text or email to the people who contact you regularly — family, friends, colleagues, your doctor's office, your dentist. You do not need to contact every business you have ever used, but do reach out to anyone who might try to call or text you in the next week.

Update your contact information on any shared documents, group chats, or work systems where your number appears. If you have a business card or a signature line with your phone number, update those too.

Frequently Asked Questions

Can I keep my old phone number if I switch carriers?

Yes, through a process called number porting. Contact your new carrier and ask them to port your number from your old carrier. You will need your account number and PIN from your old carrier. The process usually takes a few days. Your old carrier may charge a porting fee, typically $15 to $30.

What if a service keeps sending codes to my old number after I change it?

Contact that service's support team and tell them you changed your phone number but they are still sending codes to the old one. They can update their system manually. In the meantime, use the "Can't receive codes?" link on the login page to verify your identity another way.

Do I need to tell my bank about my new number?

Yes. Call your bank's customer service number (on the back of your card) and give them your new number. They use it to contact you about suspicious activity and to send you security codes. Update this before you change your number so you do not miss alerts.

What happens to my old phone number after I change it?

Your carrier will eventually reassign it to someone else, usually after 30 to 90 days. During that time, you might still receive texts meant for the previous owner of that number. You do not need to do anything with them — just delete them or let the sender know they have the wrong number.

Can I change my number if I am on a family plan?

Yes, but only your number changes. The other lines on the plan keep their numbers. Contact your carrier and ask to change only your line. You will update your accounts with your new number; the other people on the plan do not need to do anything.