How do I port my phone number to a new carrier in 2027?

Understanding the Porting Process in 2027

The FCC mandates that all wireless carriers allow you to keep your phone number when switching providers — this is called Local Number Portability (LNP) . In 2027, the process has been refined to be nearly instant for most carriers, thanks to eSIM technology and automated verification systems. However, the core steps remain the same: you need your account number and a transfer PIN from your current carrier.

Your account number is usually found on your monthly bill or in your online account settings. The transfer PIN is a temporary code that you generate — it expires after a set time (often 7–10 days), so generate it only when you're ready to port. Some carriers also require your billing ZIP code or the last 4 digits of your Social Security number for verification. Never share your account password — only the transfer PIN and account number are needed.

Choosing a New Carrier: Prepaid vs. Postpaid

In 2027, the line between prepaid and postpaid has blurred, but key differences remain. Prepaid carriers like Mint Mobile, Visible, Cricket Wireless, and US Mobile offer lower prices by using the networks of the big three (T-Mobile, Verizon, and AT&T) with some data deprioritization. For example, Visible's $25 Visible+ plan gives you unlimited data on Verizon's network, but your data may slow down during congestion. Postpaid carriers like Verizon, AT&T, and T-Mobile charge more but offer priority data, premium perks (like Netflix on T-Mobile or Disney+ on Verizon), and better roaming options.

If you travel internationally frequently, Google Fi uses a mix of T-Mobile, US Cellular, and Three (UK) networks, with data in 200+ countries at no extra cost. For home internet, T-Mobile Home Internet and Verizon 5G Home offer fixed wireless access that can replace cable, often bundled with mobile service for discounts.

eSIMs and Physical SIMs: Which to Use?

By 2027, nearly all new phones support eSIM — a digital SIM that you activate by scanning a QR code or using a carrier app. eSIMs make porting faster because you don't need to wait for a physical SIM card to ship. Carriers like AT&T, T-Mobile, Visible, and Mint Mobile offer instant eSIM activation. However, some carriers still ship physical SIMs for certain plans, and some phones (like older models or international variants) may lack eSIM support. Check your phone's IMEI on the carrier's compatibility page before ordering.

A major advantage of eSIM is that you can keep your old carrier's physical SIM active during the port — just insert the new eSIM and wait for the number to transfer. This avoids the "no service" gap that sometimes happened with physical SIM swaps.

What to Do If the Port Fails

Port failures are rare but can happen. Common reasons include: incorrect account number or transfer PIN, the number is still under contract (though most carriers now use installment plans, not contracts), or the new carrier doesn't serve your area. If your port is delayed beyond 24 hours, call the new carrier's porting department. They can check the status and work with the old carrier to resolve issues. Never cancel your old line before the port completes — that releases the number and you may lose it permanently.

The FCC also offers a porting complaint portal if you encounter unreasonable delays or carrier errors. In 2027, most major carriers have automated port validation systems that reduce errors, but human mistakes still happen.

How to Keep Your Number When Switching to a Family Plan

If you're joining a family plan on T-Mobile, Verizon, or AT&T, the porting process is the same — you just provide your transfer PIN and account number to the account owner, who adds you as a line. US Mobile and Mint Mobile also offer family plans with shared data pools. The key is to ensure the account owner has the correct information and that your number is not already active on another line. Do not cancel your old line until the port is confirmed on the new family plan.

Porting from a Landline or VoIP Service

Porting a landline or VoIP number (like from Google Voice, Skype, or Ooma) to a cellular carrier is possible but can take longer — up to 5–10 business days. You'll need your account number and PIN from the VoIP provider. Some carriers treat VoIP ports differently, so check with the new carrier's porting department before starting. Google Voice numbers can be ported out for a one-time fee of $3, but you must unlock the number first in your Google Voice settings.

Mermaid Diagram: Porting Flow

Mermaid Diagram: Carrier Comparison

FAQ

Do I need to pay off my phone before porting? If you're still paying off your phone via an installment plan (e.g., Verizon Device Payment, AT&T Next, T-Mobile Equipment Installment Plan), you must pay the remaining balance in full before the port will proceed. Otherwise, the old carrier may block the port or charge the balance to your final bill.

Can I port my number if I'm switching from prepaid to postpaid? Yes, porting works between any carriers — prepaid to postpaid, postpaid to prepaid, or between two prepaid carriers. The process is the same: get a transfer PIN from your current carrier and provide it to the new one.

How long does a port take in 2027? Most ports complete within 15 minutes to 2 hours for mobile-to-mobile transfers. Landline or VoIP ports can take up to 10 business days. If it takes longer than 24 hours, contact the new carrier's porting department.

Will I lose my voicemails or text messages when I port? Yes, porting only transfers your phone number — not your voicemails, text messages, or contacts. Back up any important voicemails or texts before starting the port. Contacts stored on your phone or in iCloud/Google Contacts will remain.

Can I port my number to a carrier that uses a different network technology? Yes, as long as the new carrier offers service in your area. For example, you can port from Verizon (which uses LTE/5G on low-band and mmWave) to T-Mobile (which uses mid-band 5G). The FCC requires all carriers to accept ports regardless of technology.

Related on PULSE

• [How long does it take to port a phone number in 2027?](/knowledge/tc0241)
• [How do I keep my phone number if I cancel my plan in 2027?](/knowledge/tc0204)
• [How do I check if my phone is compatible with a new carrier in 2027?](/knowledge/tc0162)
• [Can I bring my own phone to a new carrier (BYOD) in 2027?](/knowledge/tc0120)
• [Should I finance a new phone or buy it outright in 2027?](/knowledge/tc0123)
• [Best Cellular and Wireless Carrier in New Orleans in 2027](/knowledge/tc0164)

Sources

• FCC – Keeping Your Phone Number When You Change Carriers
• Verizon – How to Transfer Your Number
• AT&T – Port Your Number
• T-Mobile – Bring Your Number
• Mint Mobile – Porting Guide
• Visible – How to Port Your Number
• Cricket Wireless – Transfer Your Number
• US Mobile – Porting FAQ
• Google Fi – Porting Info
• OpenSignal – Mobile Network Experience Reports
• RootMetrics – US Mobile Network Performance
• PCMag – Best Cell Phone Plans 2027
• CNET – Best Wireless Carriers 2027

Bottom Line

Porting your phone number in 2027 is a simple, consumer-protected process that takes minutes if you have the right information ready. Generate a transfer PIN from your current carrier, provide it along with your account number to the new carrier, and never cancel your old line until the port is complete. Choose a carrier based on coverage in your area and data priority needs — prepaid options like Mint Mobile or Visible save money, while postpaid plans from Verizon, AT&T, or T-Mobile offer priority data and perks. Check real-world performance on OpenSignal or RootMetrics before committing, and use the FCC's resources if you encounter issues.