How to port your number into Google Voice to keep it cheaply

If you're cancelling a line but want to keep the number alive without paying for a full phone plan, porting it into Google Voice is one of the most popular ways to do it. Here's how the process works — and the one mistake that makes it impossible.

Last reviewed: July 2026

There's a specific situation this page is for: you're dropping a mobile line — maybe you're moving abroad, consolidating two numbers, or ending a plan you no longer need — but there's a number you don't want to lose. You don't need it as your everyday phone anymore; you just want to keep receiving its calls, texts, and voicemail, and keep it out of the reassignment pool. Porting the number into Google Voice fits that need well, because after the port you can use the number over the internet without any monthly carrier bill. This page focuses narrowly on the Google Voice route; for the wider set of options, see our overview of how to keep your old number.

The one rule that governs everything below: the number must still be active with your current carrier to port it. Cancel the line first and the number begins aging out toward reassignment, and porting it in becomes unreliable or impossible. Always port before you cancel.

What porting into Google Voice actually is

Porting means moving your existing number from your carrier to a new service — in this case, Google Voice, which is an internet-based calling and texting service rather than a traditional cellular carrier. Once the number lives in Google Voice, calls and texts to it ring through the Google Voice app or forward to another phone you designate, and voicemail is handled online. You are, in effect, keeping the number as a lightweight virtual line instead of a full phone plan.

The general steps

Menus and screens change over time, so treat this as the shape of the process and confirm the current steps in Google's official Voice help pages:

Set up a Google Voice account with your Google login, if you don't already have one.
Start the "change / port an existing number" flow in Google Voice settings and enter the mobile number you want to bring in. Google will check whether that number is eligible to port (mobile numbers are the typical case; not every number type or region is supported).
Provide your carrier account details. As with any port, you'll generally need your current carrier's account number and a port-out PIN or transfer passcode, plus the billing name and address on file. Getting these to match exactly is what keeps a port from stalling — the same requirements we cover in the general keep-your-number guide.
Pay the one-time porting fee. Google charges a small one-time fee to port a number in. Treat the exact amount as subject to change and confirm it during the flow rather than trusting any figure you read secondhand.
Wait for the port to complete and verify. A mobile port often finishes fairly quickly, but it can take longer. Don't cancel anything until the number shows as active in Google Voice.

Don't cancel your carrier line yourself

This deserves its own warning because it's the most common way people lose a number. When a port completes, the number leaves your old carrier automatically — you do not need to (and should not) call the carrier to cancel the line first. If you cancel before porting, the number is no longer active, and Google Voice has nothing to pull over. Let the port do the cancellation for you.

What you can and can't do with the number afterward

Once the number is in Google Voice, expect the following in broad terms — again, features evolve, so verify current capabilities:

You can make and receive calls, send and receive texts, and get voicemail (often with transcription) through the app or web, and forward calls to another phone.
It is not a full carrier line. Google Voice is not a replacement for a cellular plan — it isn't designed to be your reliable path to emergency services, and behavior around certain message types, short codes, and international use can be limited. Many bank and app verification texts in particular don't reliably arrive at Google Voice numbers, which matters if this number is tied to your logins.
It depends on the internet. Calls and texts route over data or Wi-Fi, not a cellular signal of its own.

Because verification codes don't always land on Google Voice numbers, sort out your logins before you move the number. If this number is a 2FA or account-recovery contact anywhere, read unlinking 2FA from a number you're giving up and update those accounts first — otherwise you can lock yourself out.

Is it the right choice?

Porting into Google Voice is a strong fit when a number has real sentimental or practical value but doesn't need to be your daily driver: an old business line, a number your contacts have had for years, or one you're not ready to fully retire. If you need the number to keep working as a normal cellular line with reliable texting and verification, porting it to a new carrier instead is the better move — that path is covered in how to keep your old number. Either way, the timing rule is identical: act while the line is still alive.

This page is general consumer information, not advice specific to your account. Google Voice's availability, porting eligibility, fees, and features vary by region and change over time, and porting rules differ by carrier. Confirm the current details with Google Voice's official help pages and your carrier before you cancel anything.