What happens when you move your number to a new phone

Moving your phone number to a new device is called porting. Your carrier moves the number itself — not the phone — to whichever device you want to use. The number stays yours; only the hardware changes. You can port to a new phone from the same carrier, or you can port to a different carrier entirely and bring your number with you.

The process takes a few days to a week, depending on your carrier and whether you are staying with them or switching. During that time, calls and texts may be delayed or unreliable, so plan the move for when you can afford a gap in service. You will need your account number and PIN or password before you start.

Key Takeaways

  • Porting your number to a new phone requires your account number and a PIN or password from your current carrier.
  • If you are staying with your carrier, you can often port the number in-store, by phone, or through their app or website.
  • If you are switching carriers, you start the process with the new carrier, who will contact your old carrier to request the port.
  • The port usually completes within three to five business days, but service may be spotty during the transfer.
  • Once the port is complete, your old SIM card stops working and you will use the new carrier's SIM card or eSIM.

Porting to a new phone with your current carrier

If you are keeping the same carrier and just switching devices, contact them directly. Most carriers let you port the number through their website, mobile app, or by calling customer service. Some also allow in-store ports if you have a physical location nearby.

You will need your account number (usually on your bill or in the carrier's app) and either a PIN or password. The carrier will ask which phone you are moving to — you can usually port to any unlocked phone that works on their network, or to a phone they sell. If you are buying a new phone from them, the staff can often start the port while you are in the store.

Once the port is complete, remove the old SIM card from your old phone and insert the new one into your new phone, or set up the eSIM if your new phone uses that instead. Your number will ring on the new device within a few minutes.

Porting to a new phone with a different carrier

If you are switching carriers, start with the new carrier, not the old one. Visit their store, call their customer service, or go to their website and look for "port in" or "bring your number" options. You will need your current account number and PIN or password from your old carrier.

The new carrier will submit a port request to your old carrier on your behalf. Your old carrier has to approve it within one business day. Once approved, the port usually completes within three to five business days, though some carriers are faster. During this window, your service may drop in and out — this is normal.

When the port is complete, your old carrier will deactivate your old SIM card. Your new carrier will send you a new SIM card or set up an eSIM, and your number will work on their network. You may still receive a final bill from your old carrier for any remaining balance or early termination fees, depending on your contract.

What you need before you start

Gather these items before you contact your carrier:

  • Your account number: Find this on your bill, in your carrier's app, or by calling customer service. It is usually a string of numbers and letters.
  • Your PIN or password: This is the security code you set up with your carrier. If you have forgotten it, call customer service and they can reset it, though this may take a day or two.
  • Your phone's IMEI number (if switching carriers): This is a unique identifier for your phone. You can find it by dialing *#06# on most phones, or in your phone's settings under About Phone. Some carriers ask for this to make sure your phone is compatible with their network.
  • Proof of identity: If you are porting in a store, bring a government ID. If you are porting by phone or online, the carrier will verify your identity by asking security questions.

Why the port takes time and what to expect

The port takes several days because your old carrier has to release the number and your new carrier has to set up it on their network. During this window — usually three to five business days — your service will be unreliable. Calls may not ring through, texts may arrive hours late, and you may not be able to make outgoing calls.

This is why you should plan a port for a time when missing a call or text will not cause a problem. If you need to stay reachable during the port, give people a temporary phone number or email address to reach you. Once the port completes, your number will work normally on your new phone.

If the port does not complete after five business days, contact your new carrier's customer service. Ports occasionally stall if there is a mismatch in account information or if your old carrier did not approve the request. The new carrier can usually resolve this by resubmitting the request or correcting the information.

Porting to a phone you already own

You do not have to buy a new phone to port your number. You can port to any unlocked phone that works on your carrier's network. An unlocked phone is one that is not tied to a specific carrier — you can use it with any carrier that has compatible network technology.

If your new phone is locked to a different carrier, you will need to unlock it first. Contact that carrier and ask them to unlock it. Most carriers will unlock a phone once you have paid off any remaining balance and the phone is no longer under contract. Unlocking usually takes a few hours to a day.

Once your phone is unlocked, follow the porting steps above. The carrier will confirm that your phone is compatible with their network before the port completes. If there is a compatibility issue, they will let you know before the port starts, so you can choose a different phone.

What happens to your old phone after the port

Your old phone becomes a regular device once the port is complete. The SIM card in it will no longer work for calls or texts, but you can still use the phone on Wi-Fi to access email, apps, and the internet. You can sell it, give it away, or keep it as a backup.

If you want to reuse the old phone with a different carrier later, make sure it is unlocked first. If it is locked to your old carrier, contact them and ask them to unlock it. You will usually need to have paid off the phone and be out of contract.

Frequently Asked Questions

Can I port my number if I still owe money on my phone?

Yes. Porting your number and paying off a phone are separate things. You can port the number to a new carrier even if you have an outstanding balance on your old phone. However, your old carrier may charge an early termination fee if you are still under contract. Check your contract or call customer service to find out what you owe.

What if my old carrier denies the port request?

This is rare, but it can happen if there is a dispute on your account or if your account information does not match what the new carrier submitted. Contact your old carrier and ask why the port was denied. Usually it is a straightforward fix — a mismatched address or account number. Once you correct it, the new carrier can resubmit the request.

Can I port my number to a phone I buy from a different store?

Yes. You can port your number to any unlocked phone, whether you buy it from your carrier, a third-party retailer, or online. Just make sure the phone is compatible with your carrier's network. Your carrier can tell you which phones work on their network before you buy.

Will I lose my text messages and photos when I port my number?

No. Porting only moves your phone number. Your text messages, photos, and other data stay on your old phone unless you transfer them separately. Before you port, back up your data using your phone's built-in backup tool (iCloud for iPhone, Google Drive for Android) or by connecting to a computer. Then restore the backup on your new phone.

How much does it cost to port my number?

Porting itself is free. However, your old carrier may charge an early termination fee if you are still under contract, and your new carrier may charge an set up fee. These fees vary by carrier and contract. Ask both carriers about any fees before you start the port.