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Cancellation of a mobile or internet contract, in German (Switzerland)
Switzerland · in German · for consumers
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Made for use in Switzerland
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For customers in Switzerland, in German: cancels a mobile, internet, TV or landline contract at the end of the minimum term, with the contractual notice period, because of an announced price or contract change, or for an important reason, and asks for written confirmation and how to return equipment. Notice periods and minimum terms are in the contract and terms, not in a statute. Send it by registered post; in a dispute the telecom conciliation body ombudscom can help.
- Made for use in Switzerland
- Last updated November 4, 2026
Published byDocMuse
When to use this document
- You want to cancel your mobile contract in Switzerland and move to a cheaper provider.
- Your internet provider is raising prices and you want to end the contract.
- You are moving abroad and no longer need your Swiss internet or TV subscription.
- The minimum term of your phone contract is ending and you do not want it renewed.
What you fill in
The details the document asks for.
- Customer
- Customer's address
- Provider
- Provider's address
- City
- Date
- Subscription or service (e.g. mobile, internet, gym)
- Contract number
- Phone number or line number
- When and why you cancel: end of minimum term, notice period, price change or important reason
- Reason for the notice (only for an important reason)
Common questions
- What notice period applies to a mobile or internet contract in Switzerland?
- No statute sets one; your contract and the provider's terms do. Minimum terms of 12 or 24 months are common, often with a discounted phone, and notice periods of one to three months; some providers have neither. Cancelling before the minimum term ends usually means paying the fees up to its end. Check the period in your customer account or contract papers and send the notice in good time.
- Can I keep my Swiss mobile number when I change provider?
- Yes. You ask the new provider, not the old one, to transfer the number (porting). Check with the new provider whether it ends the old contract for you as part of the transfer; if so, you do not need this letter, and cancelling yourself before the transfer can put the number at risk. The old contract's remaining minimum term and notice period still apply when you port.
- Who can help if a Swiss telecom provider refuses my cancellation?
- First write to the provider, enclosing a copy of your notice and the registered-post receipt. If you cannot agree, ombudscom, the telecom industry's conciliation body, mediates between customers and providers before any court is needed. The Swiss consumer foundation regards automatic renewals hidden in the small print as unfair (Art. 8 UWG).
How you can sign this document
- Print it and sign by hand. The signature lines in the document are left blank on purpose — sign on them in ink.
- Sign it yourself with a qualified electronic signature. If you already hold a QES — Evrotrust, B-Trust, StampIT, ZealiD or any qualified provider on the EU Trusted List, on a card, a USB token, in a mobile app or in the cloud — our signing guide explains step by step how to sign this exact file without invalidating it. Step-by-step help, and a way to check it worked
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