Can You Port a Landline Number to a Cell Phone? Yes — Here's How

In the US, the FCC's consumer guide is plain: if you stay in the same geographic area, you can keep your number when you change providers, and porting works between wireline, internet-based (VoIP) and wireless providers. For landline-to-cell moves specifically, the FCC clarified in 2003 that a landline company must port the number to a wireless carrier whose coverage area overlaps the place where the number is assigned — and the number keeps its original rate center (the local area it belongs to) after the move.

So the real question is not where you live today, but whether the cell carrier serves the number's home area. You can look up the area code to see which region the number is registered to. A few small rural phone companies hold state waivers from porting rules; if one blocks your port, the FCC points you to your state public utilities commission.

Canada works the same way. CRTC rules let numbers move between landline and wireless carriers in areas where local number portability is in place, as long as the number keeps its original local exchange (rate centre). Canadian wireless carriers' transfer pages accept landline numbers as well as mobile ones.

Before anything else, check your number's current line type. If it shows as a landline (wireline), the steps below apply as written. If it already shows as VoIP, your “landline” is really an internet phone service — the process is the same, but the account details come from that provider.

The new carrier runs the port, not the old one. In order:

• Ask the cell carrier to confirm the number can be ported before you buy a phone or a plan.
• Pull a recent landline bill and note the account number, the account holder's name and service address exactly as the phone company has them, and the billing telephone number (BTN — the main number the account is billed under).
• Ask the landline company whether it uses a transfer PIN or passcode. For business or multi-line accounts, also request the Customer Service Record (CSR) — the account record the new carrier checks your request against.
• Sign up with the wireless carrier, say you are bringing a landline number, and enter every detail exactly as it appears on the bill or CSR. A small mismatch in the name or address can get the port rejected.
• Keep the landline active. Do not cancel it first: the FCC warns against ending your old service before the new one is set up, and a cancelled number can be lost for good.
• When the new carrier confirms the port, test incoming and outgoing calls, then check with the landline company that billing for that line has stopped.

Longer than a cell-to-cell switch. The FCC requires simple ports to be processed within one business day and notes that moves between wireless carriers can work within a few hours — but it also says porting from wireline to wireless may still take a few days. Carriers' own estimates for landline numbers are longer still: Verizon, for example, quotes 2 to 10 business days. Ask your carrier before you plan anything around the switch.

In Canada, the CRTC also sets a longer standard interval for landline-to-wireless ports than for wireless-to-wireless ones, and carriers warn that landline transfers can take longer depending on the account.

During the changeover, the FCC notes you may briefly have two phones with the same number, and 911 callback can be affected. Ask the new carrier how both will work while the transfer is in progress.

The surprises usually come from something else tied to the line:

• DSL internet on the same line. Porting the number can take the internet connection down with it. Ask for standalone (“dry loop”) DSL, or switch internet providers first.
• Alarm systems, fax machines and medical alert devices that dial out over the landline. They stop working once the line is gone. Ask your alarm company about a cellular communicator, and disconnect the alarm from the landline before the transfer.
• Bundles and contracts. If the phone line is part of a TV or internet bundle, ask whether dropping it changes the price of what is left, and check for early termination fees. The FCC says your old company cannot refuse to port because you owe it money — but you still owe it.
• Business accounts with several numbers. If you are moving only some of them, ask the landline company to split them onto separate accounts first.
• It becomes a mobile number. Once a wireless carrier serves it, it is an ordinary cell number: lookups show the new carrier, and your old long-distance company does not come along. Moving it back to a landline later may not be possible if you have moved away from its original local area.

Some services accept mobile numbers only — personal Google Voice is the best-known example. The established workaround is two ports: first move the landline to a cheap prepaid mobile carrier, let it settle as a mobile number, then port it from there. Our Google Voice porting guide covers the full sequence and the costs.

If the number is a business line, or you would rather not put it on your personal SIM, there is another route: port the landline into a VoIP business phone service and answer it in an app on your cell phone (and on your computer). Calls to the old number ring in the app over Wi-Fi or mobile data, while your cell phone keeps its own number.

Be clear about what changes: in this setup the number becomes a VoIP number used through an app. It does not become a SIM cellular line, and it needs an internet connection to work. The porting steps and the traps above — DSL, alarms, keeping the landline active — are the same.

Quo (formerly OpenPhone) is one such service. Its porting guide lists US and Canadian local numbers and North American toll-free numbers as portable, landlines included, notes that some rate centers cannot be supported, and says Quo does not charge to port a number in. Have them confirm your number is eligible before you cancel anything.