Keep your phone number when you switch in Finland

The short answer

Unless you agree on a later date, your number must move to the new operator within five working days. The break between the old and new service may be at most 10 minutes for mobile and 60 minutes for fixed-line numbers.

You can usually take your mobile or landline number with you to a new provider. You ask the new provider to transfer it, and the number moves on an agreed day.

Official source: traficom.fi · Checked 2026-10-14

📜 The rules in Finland

The details

Porting is free for you: the operator may not charge you for moving your number. Your right to port lasts at least one month from the date you cancel (102 §). (finlex.fi)
You can port a number tied to a fixed-term contract at any time, even if your contract says otherwise, but you pay the old contract's monthly fees until the term ends. (traficom.fi)
The duty to port does not cover moving a fixed-line number to mobile or back, and a fixed-line number can only be ported within its own telephone area (102 §). (finlex.fi)
An anonymous prepaid number cannot be ported. If you made the new contract online or by phone, the number moves only after the 14-day withdrawal period, unless the operator lets you waive that right. (traficom.fi)

Kilpailu- ja kuluttajavirasto (KKV) – kuluttajaneuvonta

Advice and help in a dispute if your written complaint to the operator brings no result. Phone service usually Monday to Wednesday 10–12 and Thursday 12–14, or use the online form.

📞 09 5110 1200 🔗 kkv.fi

Official source: kkv.fi · Checked 2026-10-14

Kuluttajariitalautakunta

Gives a free, non-binding recommendation on your dispute with the operator, after you have complained to the operator and contacted KKV's consumer advice.

🔗 kuluttajariita.fi

Official source: kuluttajariita.fi · Checked 2026-10-14

🪜 Step by step

Do not cancel the old contract firstIf you end the old contract before the transfer, the number can be lost. Let the new provider request the transfer.
Get your details readyYou usually need the number, the name on the old contract and sometimes a customer number or transfer code from the old provider.
Agree the transfer dateThe new provider tells you when the number moves. Keep the old SIM or line in use until then.
Check that everything worksTest calls and messages on the new SIM or line, and check that the old provider sends a final bill and stops charging.

📇 Who to contact

Kilpailu- ja kuluttajavirasto (KKV) – kuluttajaneuvontaAdvice and help in a dispute if your written complaint to the operator brings no result. Phone service usually Monday to Wednesday 10–12 and Thursday 12–14, or use the online form.📞 09 5110 1200 🔗 www.kkv.fi/kuluttaja-asiat/kuluttajaneuvonta

KuluttajariitalautakuntaGives a free, non-binding recommendation on your dispute with the operator, after you have complained to the operator and contacted KKV's consumer advice.🔗 www.kuluttajariita.fi

Liikenne- ja viestintävirasto TraficomSupervises phone and internet providers and explains your rightsFor information, and to report a provider that breaks the rules📞 029 5345 610 🔗 www.traficom.fi/fi/puhelin-ja-laajakaista/puhelimen-ja-laajakaistan-kayttajalle

❓ Questions

How long does a number transfer take?

It is usually quick. If the rules in Finland set a maximum time or compensation for delays, you find them on this page.

Can I keep my number if I still owe the old provider money?

You still have to pay what you owe under the old contract. Ask the new provider before you switch whether anything could hold up the transfer.

Can I move a mobile number to a landline, or the other way round?

Usually not: mobile numbers move between mobile providers, landline numbers between landline providers.

📎 Sources

Checked: 2026-10-14

🧭 Is this still correct?

We check this information carefully, but phone numbers, websites and rules change — and sometimes we get something wrong. Spotted a mistake or a change? Let us know below.

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📲 Can I keep my phone number when I switch provider in Finland?