You can keep your phone number when you switch providers, but you need to request it before you cancel

Switching cell phone providers means moving your service from one company (like Verizon, AT&T, or T-Mobile) to another. The process takes a few days to a week, and your service will have a gap of a few hours while the transfer happens. The most important step is requesting a port authorization code from your current provider before you sign up with the new one — this is what lets you keep your existing phone number.

You do not have to keep your number. If you are willing to accept a new number, the switch is faster and simpler. But if your number is tied to your work, your contacts, or accounts you log into, porting it over is worth the extra step.

Key Takeaways

  • Request a port authorization code from your current provider before switching; this code lets you keep your phone number and is valid for 30 days.
  • Your service will drop for a few hours during the transfer, so plan the switch for a time when you do not need your phone urgently.
  • Bring your port authorization code and account number to your new provider, either in person, by phone, or online depending on the company.
  • Check your bill after the switch completes to make sure you were not charged for service you did not use at your old provider.
  • If you are under contract or have a device payment plan, you may owe an early termination fee or need to pay off the device balance before leaving.

Understand what you owe your current provider before you leave

Before you contact your current provider, check your bill or account online to see whether you are in the middle of a contract or device payment plan. If you signed a two-year agreement and you are leaving early, your provider may charge an early termination fee — this varies by company and by how much time is left on your contract. If you are still paying off a phone through monthly installments, you will owe the remaining balance in full when you leave, or you can transfer the device to a new provider if they accept it.

Some providers waive early termination fees if you switch to them, so ask your new provider whether they cover this cost. A few major carriers offer this as part of their switching promotions, though the terms change. If you have a prepaid plan with a balance remaining, that money typically stays in your account for a set period (usually 30 to 90 days) and you can use it at your new provider if they accept transfers, or you lose it.

Request your port authorization code from your current provider

Contact your current provider by phone, through their website, or in person at a store and ask for a port authorization code (sometimes called a "porting PIN" or "migration code"). Have your account number and the phone number you want to port ready. The provider will give you a code that is valid for 30 days — write it down or save it in a note on your computer, because you will need it when you sign up with your new provider.

Do not cancel your service yet. Canceling before you have the code and before your new provider has started the transfer can cause delays or lose your number entirely. Wait until your new provider confirms the transfer is complete before you officially end service with your old company.

Sign up with your new provider and provide the port authorization code

Visit your new provider's website, call them, or go to a store and tell them you want to port your number. You will need to provide your port authorization code, your account number from your old provider, and the phone number you want to transfer. The new provider will start the transfer process, which usually takes 24 hours to a few days. During this time, your old service and new service may both be active, or your old service may drop before the new one fully activates — this varies by provider.

If you are bringing your own phone (one you already own), make sure it is compatible with your new provider's network. If you are buying a new phone from the new provider, ask whether they will activate it before or after the port is complete. Some providers activate the new phone first and then transfer your number to it; others wait until the transfer is done.

Plan for a service gap and confirm the transfer is complete

Your phone will likely lose service for a few hours during the port. This usually happens at night or early morning, but you cannot control the exact timing. Plan the switch for a day when you do not need to make urgent calls or use data. Once your new provider confirms the transfer is complete, test your phone by making a call and sending a text to make sure everything is working.

Check your voicemail and any apps that use your phone number to log in (like banking apps or two-factor authentication). Some apps may need you to re-verify your number after the port. If your service does not activate within 24 hours of the scheduled transfer, contact your new provider's customer service — delays can happen if there is a mismatch in account information or if your old provider did not process the port correctly.

Cancel your old service and check for unexpected charges

Once you confirm your new service is working, contact your old provider and formally cancel. Ask them to confirm the cancellation date and whether you will receive a final bill. Some providers charge a prorated amount for the days you used service before the port completed; others may charge you for a full month even if you left partway through. Request an itemized final bill so you can see exactly what you are being charged for.

Watch for charges after you cancel. Some providers continue billing for a month or two by mistake, or they charge you for services you did not use. If you see unexpected charges, contact the provider's billing department and ask them to reverse the charges. Keep records of your cancellation confirmation and your final bill in case you need to dispute charges later.

What to do if the port fails or takes too long

If your number does not port within a few days, contact your new provider first — they can check the status of the transfer on their end. If they say the port is stuck, ask them to contact your old provider directly to find out why. Common reasons for delays include a mismatch in your account information (like your name or address being spelled differently), a missing or incorrect port authorization code, or your old provider not processing the request.

If your old provider is blocking the port, you may need to call them directly and ask why. Some providers delay ports if you have an outstanding balance or an active contract dispute. If you believe the port is being blocked unfairly, you can file a complaint with the Federal Communications Commission (FCC) through their website — the FCC oversees phone number porting rules and can investigate if a provider is not following the rules.

Frequently Asked Questions

Will I lose my text messages and photos when I switch providers?

No. Your text messages and photos are stored on your phone, not with your provider. Switching providers does not affect them. Your voicemail may be lost if you do not save it before switching, so download any important voicemails to your computer first.

Can I switch providers if I still owe money on my phone?

Yes, but you will owe the remaining balance to your old provider in full. Some new providers offer to pay off your old device balance as part of a promotion, but this is not may provide. Check with your new provider before you switch to see if they offer this.

What happens to my old phone number if the port fails?

If the port fails, your old number stays with your old provider. You can try the port again with a new authorization code, or you can accept a new number from your new provider. If you want to try again, request a fresh port authorization code from your old provider.

Do I need to visit a store to switch, or can I do it online?

Most major providers let you switch online or by phone. Visiting a store in person can be helpful if you are buying a new phone or if you want help with the setup, but it is not required. Online and phone switches usually take the same amount of time.

How long does it take to switch providers?

The port itself takes 24 hours to a few days. Your new service may activate before the port is complete, or it may wait until the port is done — this depends on your provider. Plan for a total of three to seven days from the time you sign up with your new provider to the time everything is fully switched over.