Phone Number Porting: Your Complete Guide to Keeping Your Number When You Switch (2026)

May 13, 2026

7-10 min read

Your mobile number belongs to you, not your carrier. Federal law gives you the right to take it with you when you switch service providers, and the process is simpler than most people expect. Here’s everything you need to know.

Key Takeaways

Phone number porting is protected by FCC regulations, meaning any service provider must release your number on a valid request.
You’ll need your account number, account PIN, and billing address from your current service provider before you begin.
Most wireless-to-wireless transfers complete within 15 minutes to 24 hours; landline and VoIP ports take longer.
Never cancel service with your current provider before the port completes, or you risk losing your number entirely.
Early termination fees may still apply when leaving a contract, but they cannot legally prevent a number transfer.

What Phone Number Porting Actually Means

Phone number porting is the process of transferring your existing number from one carrier to another. No new number. No notifying your contacts. No updating your two-factor authentication apps. Your mobile number moves with you.

This right was established through the Telecommunications Act of 1996 and formalized through Local Number Portability (LNP) regulations enforced by the Federal Communications Commission.¹ Since then, tens of millions of numbers have been ported between wireless service providers every year.

The mechanics are invisible to you. When a port completes, the national number database updates so that calls and texts route to your new carrier’s network instead of your old one.

Which Numbers Are Eligible for Transfer

Wireless numbers are the most commonly ported. Any mobile number from any service provider can be transferred to another carrier as long as your account is in good standing.

Landline number porting to a wireless carrier is also possible and works well in most geographic areas, typically taking 2 to 10 business days.

A VoIP service provider (VoIP stands for Voice over Internet Protocol, meaning calls travel over the internet rather than a traditional phone line) can also release numbers for porting. Transferring from a VoIP provider to a wireless carrier usually takes 1 to 3 business days.

Toll-free number porting follows a separate process through the Somos registry and is typically handled at a business account level.²

What You Need Before Starting the Porting Process

Gathering the right account information before you start prevents the most common reason ports fail: a mismatch between what you submitted and what your current provider has on file.

Account Number: This is not your phone number. Your account number is a unique identifier assigned by your service provider and appears on your bill or inside your online account portal.

Account PIN or Transfer PIN: Your carrier assigns a PIN to protect your account. Some phone companies call this a number transfer PIN or port-out PIN. If you can’t remember it, call your current carrier’s support line and ask them to reset it. They are required to provide it.

Billing Address: Use the exact billing address on file with your service provider, including spacing, abbreviations, and zip code. Even a small discrepancy causes a port rejection.

Primary Account Holder: The number porting request must be submitted by the account owner. If the account is under someone else’s name, they’ll need to initiate or authorize the transfer.

Step-by-Step: How to Port Your Phone Number

Step 1: Keep Your Current Service Active

Do not cancel your account with your current service provider before the port completes. Your mobile number must remain active on the old network for the transfer to process. Once the port succeeds, your old account closes automatically.

Canceling early can cause your number to be released and potentially reassigned to someone else.

Step 2: Confirm Device Compatibility

Before initiating the transfer, verify that your device works on your new carrier’s network. Use your phone’s IMEI number (dial *#06# to find it) on the new carrier’s compatibility checker. If your device is still locked to your old carrier, unlock it first. Our guide on unlocking your phone covers that process in full.

Step 3: Sign Up and Submit the Port Request

When creating your account with the new service provider, select the option to transfer your existing number. Enter your mobile number, account number, PIN, and billing address. Double-check every field. A single character error rejects the port.

Step 4: Wait for Your Number Transfer to Complete

Once you submit the number porting request, your new carrier handles the rest. Wireless-to-wireless transfers take 15 minutes to 24 hours. Landline ports take 2 to 10 business days. VoIP provider ports take 1 to 3 business days. A brief service interruption, usually just a few minutes, is normal when the switch happens.

Step 5: Activate and Test

After your new SIM card or eSIM activates, make a test call and send a text message. Check that incoming calls reach you and outbound texts go through. If you use call forwarding, update those settings in your new account.

Early Termination Fees: What to Expect When You Switch Providers

If you’re under a contract with your current service provider, you may owe early termination fees when you leave. These are contractual obligations based on your agreement, not a barrier to number porting.

Early termination fees can be charged, but they cannot legally block a transfer request. Your old carrier must release your number even if you have an outstanding balance or remaining contract time.³

Check your contract terms before switching so there are no surprises on your final bill. Some wireless service providers waive fees for military personnel, and others reduce fees based on how far into the contract you are.

Porting to and From VoIP: Google Voice and More

Google Voice and Number Porting

If your number currently lives with a VoIP service provider like Google Voice, the process works similarly to porting from a wireless carrier. To move a number away from Google Voice to a new mobile service, you typically need to unlock the number in Google Voice first, which requires a one-time fee.⁴ Once unlocked, the number enters the standard transfer process.

Google Voice also accepts numbers from most mobile service providers and wireless carriers if you want to port in the other direction.

Call Forwarding as a Temporary Bridge

If your port is delayed, call forwarding can keep you reachable in the meantime. Set it up on your old number to redirect incoming calls to your new number during the transition. This is especially useful for longer landline or VoIP transfers.

Why Port Requests Get Rejected (and How to Fix Each One)

Account Information Mismatch

This is the most common cause of rejection. Your account number, PIN, or billing address didn’t match your current provider’s records. Call the carrier, confirm the exact details on file, and resubmit the request.

Outstanding Balance

Some phone service providers reject ports when there’s an unpaid amount. Paying the outstanding balance and resubmitting usually resolves this quickly.

Number too new: Numbers assigned fewer than 60 days ago may not be eligible for transfer. You’ll need to wait until the number meets the minimum age requirement.

Carrier Delay or Obstruction

Carriers are legally prohibited from unreasonably delaying a valid port request. If your request has been pending more than 24 hours on a wireless-to-wireless transfer, contact your new carrier’s porting support team. If your old provider is actively blocking the transfer, file a complaint with the Federal Communications Commission at consumercomplaints.fcc.gov.⁵

Your Porting Rights Under FCC Rules

The FCC’s Local Number Portability rules give you clear, enforceable protections as a consumer:

Any wireless service provider must release your number on a valid request.
Wireless-to-wireless ports should complete within one business day.
Carriers cannot charge porting fees to the outgoing customer.
Your old provider cannot cancel your account before the port completes.

These rules apply to all phone service providers and mobile carriers operating in the United States. Violations can be reported directly to the FCC online.

Tips for a Faster, Smoother Transfer Process

Initiate the port during evenings or weekends when network traffic is lower. Screenshot your account details from your current service provider before you start, so you have them if the port needs a correction. Keep your old device nearby during the transfer in case verification messages arrive.

Check your new coverage area before committing to the switch. You can check Vouch Mobile’s coverage to see how AT&T’s network reaches your area before you make the move.

Choosing Your Next Carrier After a Successful Port

After your number is ported successfully, you’re free to move to any compatible network. Many people discover they’ve been overpaying by $40 or more per month when the same coverage is available for far less through an MVNO (Mobile Virtual Network Operator), a service provider that leases network capacity and passes the savings directly to customers.

Vouch Mobile runs on AT&T’s 5G network and starts at $25/month with annual billing, with no credit check and no contracts. Compared to what most people pay a major carrier, that’s $480 or more in annual savings. See our plans page or explore our prepaid vs. postpaid guide to understand which option fits your situation.

Conclusion

Keeping your number when you switch is a federally protected right, and the process is straightforward when you know the steps. Gather your account information before you start, keep your current service active until the transfer finishes, and double-check every field you submit. Whether you’re moving from a major wireless carrier, a landline, or a VoIP service provider, your number can follow you.

The only question left is where you want to take it.

About Vouch Mobile

Vouch Mobile is a modern wireless provider built for people who want premium coverage without the premium price or complexity.

Powered by the same major U.S. networks as the big carriers, Vouch delivers simple, transparent plans with no hidden fees, no contracts, and a seamless digital experience that lets you switch in minutes and keep your phone and number.

Whether you’re looking to save money or just want a more straightforward way to stay connected, Vouch Mobile makes wireless make sense again. Ready to get started? Pick Your Plan: https://vouchmobile.com/

FAQ

How long does phone number porting typically take?

Wireless-to-wireless transfers complete within 15 minutes to 24 hours. Landline and VoIP ports take 2 to 10 business days due to different network systems.

Can I port my number if I still owe money to my current service provider?

Yes, your right to port is protected by FCC rules regardless of an outstanding balance. Some providers may delay the process until the balance is paid, but they cannot permanently block the transfer.

Will I lose my number if I cancel my account before the port completes?

Yes. Keep your account active with your current provider until the transfer finishes. Canceling early risks having the number released and reassigned to someone else.

Does phone number porting cost anything?

Your new carrier does not charge for porting, and your old provider cannot legally charge a porting fee. Early termination fees for breaking a contract are separate and may still apply.