Phone & internetCS
Phone & internet · Czechia
Checked 2026-10-14

📡 Can I use my own router or modem instead of the provider’s in Czechia?

The short answer

EU open-internet rules give you the right to use terminal equipment of your choice. ČTÚ fined a provider that allowed its service only with its own modem: unless there is an objective technical reason, you decide which modem or router to use.

Many people prefer their own router. Whether your provider must let you connect it, and which details it must give you to set it up, depends on the rules in Czechia.

Official source: ctu.gov.cz · Checked 2026-10-14

📜 The rules in Czechia

The details

  • Network operators must let you connect equipment that meets the technical requirements to a suitable interface, and must publish the types of interface and their specifications (§ 73). (e-sbirka.gov.cz)
  • If you leave early and keep a subsidised device restricted to the provider's network, the restriction must be removed free of charge, at the latest when you pay for the device. (e-sbirka.gov.cz)
  • ČTÚ supervises compliance with the EU open-internet rules in Czechia and publishes a report on it every year. (ctu.gov.cz)

Český telekomunikační úřad (ČTÚ)

Telecom regulator: consumer information, objections to how a provider handled your complaint, and other disputes with providers.

📞 224 004 111🔗 ctu.gov.cz
Official source: ctu.gov.cz · Checked 2026-10-14

🪜 Step by step

  1. Check that it fits your lineMake sure the router supports your type of connection: fibre, cable, DSL or mobile.
  2. Ask for the access detailsYou need the login data and settings for the internet connection and, if you have one, for phone service over the internet.
  3. Keep or return the provider’s deviceAsk whether you must return a rented router, and whether you keep paying for it.
  4. If the provider refusesAsk for the refusal in writing and contact the regulator or the dispute body.

📇 Who to contact

Český telekomunikační úřad (ČTÚ)Telecom regulator: consumer information, objections to how a provider handled your complaint, and other disputes with providers.📞 224 004 111🔗 ctu.gov.cz/pro-spotrebitele
dTestIndependent advice for consumersFor advice, template letters and a second opinion🔗 www.dtest.cz

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❓ Questions

Will the provider still help me if something goes wrong?

Providers usually support the connection itself, not equipment you bought. Keep their device and settings so you can test with them.

Do I still pay for the provider’s router?

Check your contract. If the router is rented, ask whether you can stop paying when you use your own.

Will my own router make my internet faster?

It can improve your Wi‑Fi, but the speed of the line itself stays the same.

📎 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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