What you need to do to change your phone number

Changing your phone number depends on whether you own your phone outright, are under contract with a carrier, or use a prepaid plan. If you own your phone and have an active plan, you can request a number change directly from your carrier — most do this for free once per account, though some charge a small fee for additional changes. The process takes a few hours to a few days. If you're under contract, changing your number may trigger early termination fees or contract modifications, so check your agreement first. Prepaid users can usually change numbers instantly through their carrier's app or website.

Before you change your number, update your contacts at banks, employers, medical offices, and any services that use two-factor authentication. You'll also want to notify friends and family, update your social media profiles, and change your number in any apps that have it on file. Once your old number is deactivated, someone else can claim it, so the sooner you update your accounts, the safer you are.

Key Takeaways

  • Most carriers allow one free number change per account; additional changes may cost between $5 and $15 depending on your carrier and plan type.
  • Update your number with your bank, employer, and any service using two-factor authentication before the change takes effect.
  • Prepaid plans often let you change your number instantly through an app or website, while contract plans may take 24 to 72 hours.
  • Once your old number is released, another person can be assigned it, so notify critical contacts and update accounts as soon as possible.
  • Contract plans may include penalties or require plan modifications if you change your number, so review your agreement before requesting the change.

How to request a number change from your carrier

Contact your carrier directly through their customer service line, website, or mobile app. Most carriers — including Verizon, AT&T, T-Mobile, and major prepaid providers — have a dedicated option for number changes in their account settings or customer service menu. You'll need to verify your identity, usually by providing your account number, PIN, or the phone number associated with your account.

When you call or chat, tell the representative you want to change your phone number. They'll ask whether you want to keep your current plan, device, and carrier — changing your number doesn't require any of those to change. The representative will assign you a new number from available inventory in your area code (or a different area code if you request one). Some carriers let you choose from a short list of available numbers; others assign one automatically.

After the change is confirmed, your old number becomes inactive. The carrier will give you a confirmation number and tell you when the change takes effect — usually within a few hours for prepaid plans and 24 to 72 hours for postpaid accounts. During this window, both numbers may work, but once the transition completes, only your new number will be active.

Costs and fees for changing your number

The first number change on most accounts is free. Verizon, AT&T, and T-Mobile each allow one free change per account line per year or per account lifetime, depending on the plan. If you change your number a second time, expect to pay between $5 and $15, though some carriers waive the fee if you can show the change is necessary for safety or harassment reasons.

Prepaid carriers often charge no fee for number changes at all, since you own the plan outright. However, some prepaid services charge a small fee ($1 to $5) if you change your number within a certain period after purchasing the plan. Check your carrier's specific policy before requesting the change.

If you're under contract and changing your number triggers a plan modification, you may face early termination fees or be locked into a new contract term. Review your agreement or ask your carrier whether a number change will affect your contract status before you proceed.

What to update after you change your number

Start with accounts that use your phone number for security. Update your number at your bank, credit card company, and any investment or retirement accounts. These services often use your phone number to send one-time codes for login verification or fraud alerts. If they still have your old number, you won't receive those codes and may be locked out of your account.

Update your number with your employer's HR system, your doctor's office, your insurance company, and any other organization that calls or texts you for appointments or urgent matters. Notify your school if you're a student, and update your number with your child's school if you're a parent. These organizations need current contact information to reach you in emergencies.

Change your number in any apps that have it stored — messaging apps, social media, dating apps, delivery services, and banking apps all need the update. Go through your email accounts and update the phone number listed in your account recovery options. If you use your phone number as a username or login method anywhere, update that too.

Tell friends, family, and colleagues your new number through email, text, or a social media post. Update your voicemail greeting to mention that you've changed your number and direct callers to reach you another way if they have your old number.

Changing your number for safety or harassment reasons

If you're changing your number because of harassment, stalking, or domestic abuse, tell your carrier when you request the change. Many carriers will waive the fee and may be able to flag your account so your old number isn't reassigned quickly. Some carriers also offer additional privacy protections, such as blocking calls from certain numbers or hiding your number from caller ID.

After you change your number, do not share it on public platforms or with anyone connected to the person harassing you. If the harassment continues after your number change, report it to local police and consider asking your carrier about a restraining order notification service, which some carriers offer to alert you if someone tries to contact you using your old number.

If you're in immediate danger, call 911. If you need longer-term support, contact the National Domestic Violence Hotline at 1-800-799-7233 or text START to 88788. These services can help you plan for safety and connect you with local resources.

What happens to your old number

Once your carrier deactivates your old number, it goes back into the pool of available numbers. Carriers typically wait 30 to 90 days before reassigning an old number to a new customer, but this varies by carrier and region. During that waiting period, calls and texts to your old number may bounce back to the sender or go to voicemail, depending on the carrier's system.

After the waiting period ends, your old number can be assigned to someone else. This is why it's important to update your accounts quickly — if someone else gets your old number and a bank or service still has it on file, they may receive codes or alerts meant for you. This creates a security risk for both you and the new number holder.

If you need to know when your old number will be reassigned, ask your carrier. Some carriers provide this information; others do not. Either way, assume the number is no longer yours after the deactivation date and update all your accounts before that date.

Frequently Asked Questions

Will changing my number affect my contract or plan?

Changing your number alone does not affect your contract or plan. You keep the same carrier, device, and billing. However, some older contracts may have clauses about number changes, so review your agreement or ask your carrier before requesting the change. Prepaid plans are never affected by number changes.

Can I keep my old 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'll need your account number and PIN from your old carrier. The process usually takes 24 hours. Your old carrier may charge a porting fee (typically $5 to $30), though some carriers waive it.

What if I change my number and then want my old number back?

You cannot reclaim your old number once it's deactivated and reassigned. If you realize you made a mistake immediately after the change, contact your carrier right away — some will reverse the change within a short window (usually a few hours). After that, your old number is gone. This is why it's important to update your critical accounts before the change takes effect.

Do I need to change my number if I switch phones?

No. Your phone number is tied to your carrier account, not your device. When you get a new phone, your carrier transfers your number to the new device automatically. You only change your number if you want a different number from the same carrier or if you're switching carriers and want to keep your old number through porting.

How long does it take for my new number to work everywhere?

Your new number is usually active within a few hours for prepaid plans and 24 to 72 hours for postpaid accounts. However, some services may take longer to update their systems. If you can't receive texts or calls immediately, wait 24 hours and try again. If the problem persists, contact your carrier to confirm the change went through.