What porting a phone number means and why you might do it
Porting is the process of moving your phone number from one carrier to another while keeping the same number. When you port, your number stays yours — it does not belong to the carrier, and you can take it with you if you switch to a different company.
Most people port when they find a better plan, want to switch from a major carrier like Verizon or AT&T to a smaller one like Mint Mobile or Visible, or are moving to an area where their current carrier has poor coverage. You can port between any carriers in the United States, and the process usually takes one to three business days.
The catch is that you need to be in good standing with your current carrier — meaning your account is active and you do not owe them money. If you have an outstanding balance, most carriers will not let you port until you pay it.
Key Takeaways
- You can port your number to a new carrier at any time, and the number remains yours even after you switch.
- Your current carrier must not have an outstanding balance on your account, and your account must be active to port.
- You will need your account number and PIN (or the last four digits of your Social Security number) from your current carrier before you start the port.
- The port usually completes within one to three business days, but your old carrier may charge an early termination fee if you are still under contract.
- Keep your old phone active until the port is complete, because you will lose service on that phone once the number moves.
Getting your account information from your current carrier
Before you contact your new carrier, you need two pieces of information from your current one: your account number and your account PIN. Your account number is usually on your bill or in your carrier's app. The PIN is a security code you set up when you opened the account — if you do not remember it, you can reset it by calling your carrier's customer service line.
Some carriers will ask for the last four digits of your Social Security number instead of a PIN if you do not have one on file. Write down whichever code your carrier uses, because you will need to provide it to your new carrier to prove you own the account.
Check your account balance before you port. If you owe money, pay it first — most carriers will not process a port request if there is an outstanding balance. Once the balance is zero, you are ready to move forward.
Starting the port with your new carrier
Contact your new carrier and tell them you want to port your number. You can do this online through their website, through their app, or by calling their customer service line. Most carriers have a dedicated porting team that handles these requests.
When you start the port, have your current carrier's account number and PIN ready. You will also need to provide your phone number, your name as it appears on the account, and your service address. The new carrier will submit the port request to your current carrier on your behalf.
Your new carrier will give you a confirmation number and tell you when to expect the port to complete. Write this down — if something goes wrong, you will need it to follow up. Most carriers estimate one to three business days, though some complete in a few hours.
What happens during the port and what to expect
Once the port request is submitted, your current carrier has a window to approve or reject it. They almost always approve it if your account is in good standing, but they may contact you to confirm the request if they suspect fraud. If they do, answer their call — rejecting or ignoring it will delay the port.
During the port, your old phone will lose service at some point. This usually happens without warning, so do not be alarmed when it stops working. The exact moment depends on the carriers involved and the type of phone you have. Some ports happen overnight; others happen during business hours.
Once your number is ported, it will ring on your new phone instead. If you have a new phone from your new carrier, they will set up it during the porting process. If you are bringing your own phone, make sure it is compatible with your new carrier before you start the port — your new carrier can tell you whether your phone will work on their network.
Early termination fees and contract obligations
If you are still under a contract with your current carrier, they may charge you an early termination fee when you port. This fee varies by carrier and by how much time is left on your contract — it can range from nothing to several hundred dollars. Check your contract or call your current carrier to find out what you owe before you port.
The early termination fee is separate from the port itself. Your current carrier will bill you for it after the port is complete, usually on your final bill. You do not have to pay it to port — the port will go through regardless — but you will owe it afterward.
If you are month-to-month with no contract, there is no early termination fee. You will only owe any outstanding balance on your account, which you should pay before you port.
Troubleshooting a port that is taking too long
Most ports complete within three business days. If yours has not completed after that time, contact your new carrier first — they can check the status of the request and see whether your old carrier has approved it. Have your confirmation number ready when you call.
If your old carrier rejected the port, your new carrier will tell you why. Common reasons include a mismatch in your name or address, an outstanding balance, or a fraud flag. If there is a mismatch, you may need to update your information with your old carrier before trying again. If there is an outstanding balance, pay it and request a new port. If there is a fraud flag, your old carrier will contact you directly to verify the request.
In rare cases, a port can fail if your phone number is not may be able to access to port — for example, if it is a business line or a VoIP number. Your new carrier will tell you if this is the case, and they can discuss alternatives with you.
What to do with your old phone and old carrier account
Once your number is ported and working on your new phone, your old phone is no longer active. You can keep it as a backup, sell it, recycle it, or donate it. If it is still under contract with your old carrier, the contract ends when the port completes.
Your old carrier account will close automatically after the port is complete, usually within a few days. You will receive a final bill that includes any early termination fees, prorated charges for the days you used service, and any outstanding balance. Pay this bill on time to avoid collection activity.
If you had any services tied to your old number — like two-factor authentication codes sent via text, or alerts from your bank — you will need to update those services with your new number. Do this as soon as the port is complete so you do not miss important messages.
Frequently Asked Questions
Can I port my number if I still owe my old carrier money?
Most carriers will not process a port request if you have an outstanding balance. You will need to pay what you owe first. Once your balance is zero, you can request the port. If you have a dispute about the balance, contact your old carrier's billing department before you port.
What if my new carrier says my phone is not compatible?
Different carriers use different network technology, and not all phones work on all networks. Ask your new carrier which phones are compatible with their network, and either buy a compatible phone from them or bring one you already own that works. You can port your number to a compatible phone, but not to an incompatible one.
How long does it take to port a number?
Most ports complete within one to three business days. Some complete in a few hours, and some take up to a week if there are complications. Your new carrier will give you an estimate when you start the port. If it takes longer than a week, contact your new carrier to check the status.
Will I lose service on my old phone during the port?
Yes. At some point during the port, your old phone will stop working because your number has moved to your new carrier. This usually happens without warning. Make sure your new phone is ready to use before you start the port, so you do not lose access to calls and texts.
Do I have to pay an early termination fee to port my number?
Only if you are still under contract with your old carrier. Month-to-month customers do not pay an early termination fee. If you are under contract, your carrier will bill you for the fee after the port completes. The fee does not prevent the port — you will owe it afterward.