Phone & internet · Czechia

Phone & internet in Czechia: your rights

The rules that protect you as a phone and internet customer in Czechia, and who to contact. Every fact is checked on an official source.

What is going on?

🔄How do I switch my phone or internet provider in Czechia?Switching provider 📲Can I keep my phone number when I switch provider in Czechia?Keep your number 📅How long can a phone or internet contract last in Czechia, and how do I end it?Minimum term & notice 📈My phone or internet price is going up: can I leave my contract in Czechia?Price rise 🐢My internet is slower than promised: what can I do in Czechia?Slow internet 📦I am moving house: what happens to my internet contract in Czechia?Moving house 🌍Do I pay extra to use my phone in other EU countries with a plan from Czechia?Roaming in Europe ✈️Travelling outside the EU with a plan from Czechia: how do I avoid a huge roaming bill?Roaming outside the EU 📡Can I use my own router or modem instead of the provider’s in Czechia?Your own router 📝What must I get before I sign a phone or internet contract in Czechia, and can I change my mind?Contract summary & cooling-off ⚖️My phone or internet provider will not solve my complaint: where can I go for free in Czechia?Free dispute resolution 📵My phone or internet is down: do I get compensation in Czechia?Outage & compensation 🤝Is there a social tariff or cheaper phone and internet for people on a low income in Czechia?Affordable internet

Everything at a glance

Telecom regulator

Český telekomunikační úřad (ČTÚ)

Czech regulator for telecoms and postal services. It decides consumer disputes with providers, including objections to how a complaint was handled, and runs the official NetTest speed tool and a price and quality comparison tool.

📞 224 004 111 🔗 ctu.gov.cz

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

Free dispute resolution

Český telekomunikační úřad – mimosoudní řešení spotřebitelských sporů · a fee may apply

What to do first: First file a complaint (reklamace) with your provider within 2 months of receiving the bill or of the faulty service. The provider must settle it within 1 month (2 months if a foreign operator is involved).

Time limit: If the provider rejects your complaint or does not settle it in time, file an objection with ČTÚ within 1 month of receiving its answer or of the deadline passing without one.

🔗 ctu.gov.cz

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

Compare offers official

Srovnávací nástroj cen a kvality (ČTÚ)

🔗 srovnavac.ctu.gov.cz

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

Official speed test official

ČTÚ-NetTest

Its certified measurement produces a PDF you can use in a complaint to your provider. For a complaint about fixed internet ČTÚ requires the certified mode, with your computer connected to the router or modem by cable, not Wi-Fi.

🔗 nettest.ctu.gov.cz

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

Consumer organisation

dTest

🔗 dtest.cz

The law

Zákon č. 127/2005 Sb., o elektronických komunikacích

This law puts the EU rules on phone and internet services into national law.

🔗 e-sbirka.gov.cz

Checked: 2026-10-14

🔗 Also on FFCheck

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