1 · The 60-second answer
Number porting is the regulator-mandated process for moving your phone number from one carrier to another. You keep the digits. Calls, SMS, 2FA codes, voicemail greetings, the lot. And your old carrier hands the line to your new one.
With Ringo, the new carrier just happens to be a global eSIM that follows you across 180+ countries instead of a single domestic network. Same number. New range.
It's free. It's required by law in every country we operate in. It usually takes up to 24 hours. And once it's done, the people who already have your number will never know it happened.
2 · A short history of phone numbers
For most of the 20th century, your phone number wasn't really yours. It belonged to your carrier. And if you switched, you got a new one. Forwarding services existed, but they were clunky, expensive, and unreliable.
The shift began with Local Number Portability (LNP) in the late 1990s. The US mandated wireless porting in 2003. The EU followed in 2009 and tightened the rules in 2018, requiring ports to complete within one working day. Singapore, Australia, Japan, the UK, Canada and most of Latin America followed.
The result is the modern norm: a phone number is something you carry, not something you rent. Your line is identified by your number plus a routing record that tells global networks which carrier currently delivers it. The number is permanent. Only the routing record changes during a port.
3 · What gets ported (and what doesn't)
A port is a transfer of routing. Not a transfer of everything attached to the line. Knowing the difference saves a lot of small surprises on day one.
What ports across:
- The number itself. Country code, area code, every digit. Your business cards stay valid.
- Inbound calls and SMS. Anyone calling or texting your old number reaches you on Ringo from cutover onward.
- 2FA and verification codes. Bank codes, payroll logins, broker accounts. All keyed to your number, all delivered to Ringo.
- Regulatory registration. The line's official ownership record moves to Ringo so the handover is clean and traceable.
What doesn't:
- Your contacts. They live on your phone or in iCloud / Google. The port doesn't touch them.
- Voicemail recordings. Stored on your old carrier's servers. Save anything you want to keep before the port.
- Plan add-ons and discounts. International packs, family bundles, loyalty credits. They end with the carrier, not the number.
- iMessage and WhatsApp history. These key off the number, so threads continue uninterrupted. But no migration is needed in the first place.
4 · How a port to Ringo actually works
Three steps. You start the port from Ringo, not from your old carrier. That's the most counter-intuitive part for first-timers.
- You request the port at signup. Enter the number you want to keep and your current carrier. Ringo generates a port-out request on your behalf.
- Your old carrier validates it. They confirm the line is in your name, paid up, and not fraud-locked. Most carriers require a one-time transfer code (called a PAC in the UK, RIO in France, NÜV/Übertragungscode in Germany, NPC in the US. Your provider's app or support line will issue it).
- The cutover fires. Usually scheduled overnight in your local timezone. Calls and SMS keep hitting your old carrier until the cutover, then start hitting Ringo. There's a brief window. Typically under 15 minutes. Where new inbound traffic might fail; the originating carrier auto-retries.
You don't need to call your old carrier. You don't need to physically swap a SIM card. You don't lose your number for the duration of the port. It stays active on your old carrier right up to the cutover instant.
5 · Timing · And the 1% of ports that stall
Most ports finish in under 24 hours. Often in just a few. The actual cutover takes seconds; the rest is your old carrier processing the paperwork.
The 1% that stall almost always trip on one of four things:
- Outstanding balance. Most carriers won't release a number until the line is paid up. Settle your final bill before requesting the port.
- Name mismatch. The Ringo signup name must match the name on your current carrier account exactly. Maiden names, abbreviated middle names, and accent characters are common gotchas.
- Port-out lock. Several US carriers add a port-out PIN by default as anti-fraud. You'll see a "code required" prompt during signup. Generate the PIN in your old carrier's app or by calling them.
- Sub-line on a family or business plan. The line is sometimes registered to the account holder, not the user. The account holder needs to authorise the port-out.
If a port stalls, Ringo's support team can read the exact error code your old carrier returned and tell you what to fix. Until the port completes, your old line keeps working. There is no service gap.
6 · International porting · The part nobody told you
Most domestic carriers won't tell you this, because it's not in their commercial interest: a phone number is regional, but the SIM that delivers it isn't. You can keep a UK number on a SIM that's physically connecting to a network in Tokyo. The number routes inbound calls through a global signaling network (SS7 and its modern successor, Diameter), and the SIM negotiates the actual radio link wherever you happen to be.
Ringo runs on this exact principle. We hold your number in the country it was issued (UK +44, US +1, France +33, and so on) and route the line over our global eSIM. Your bank still calls a UK number; the call lands on your phone in Bali; you pick up on a Telkomsel signal. No forwarding, no second number, no roaming bill.
The catch. And there's only one. Is that not every regulator lets a foreign carrier pull a port. Ringo currently supports inbound porting from carriers in the UK, US, Canada, Ireland, France, Germany, Spain, Portugal, the Netherlands, Belgium, Italy, Sweden, Denmark, Australia, New Zealand, Singapore, Japan, and Hong Kong. We're adding markets quarterly.
7 · What changes for calls, SMS, voicemail and 2FA
- Inbound calls. Route to your Ringo eSIM the moment cutover completes. Caller ID, contact match, the works.
- Outbound calls. Show your ported number to the recipient. Not a foreign or +44/+1-prefixed travel number. Your Tinder matches see the same number they always have.
- SMS. Behaves identically: inbound and outbound use your ported number. iMessage and WhatsApp threads continue uninterrupted because they key on the number, not the carrier.
- 2FA codes. The single biggest reason number porting matters more than people realise. Banks, payroll, brokers, government portals. All of them route 2FA via SMS to the number. With Ringo, those codes land on your phone wherever it physically is.
- Voicemail. Restarts with a Ringo-hosted mailbox. Greetings and saved messages on your old carrier are not migrated automatically. Save anything you want to keep before porting.
8 · Porting your number back when you cancel
The same regulatory rules that let you port into Ringo let you port back out. There is no lock-in, no exit fee, no "you have to keep the number active for X months" clause. A port-out from Ringo finishes in the same up-to-24-hour window.
If you cancel without porting out, the number eventually returns to the regulator's number pool after a quarantine period (usually 60–90 days) and could be reassigned to another customer. So if you want to keep the number, request the port-out before cancelling. Ringo's dashboard has a one-click "Port out" flow that issues you a PAC / transfer code valid for 30 days.
