Cancel 1 & 1 contract – this is how it works

If you want to terminate your 1 & 1 contract, it is not that easy. That’s why we’ll show you step by step what to do.

To terminate your 1und1 contract is unfortunately much more cumbersome than concluding it. One possibility is to make a note of the cancellation online and to confirm it by telephone. We explain at this point how you can terminate your contract without noting it.

  1. Open the webpage

    1 & 1 contract service

    and log in with your customer details. Use your customer number or email address for this.

  2. All active 1 & 1 contracts are now listed. Select the contract that you want to cancel.

  3. Now click on the button


    under the option

    Complete contract: note the termination

    and then on

    Proceed anyway

    . You will now see the date on which your contract ends. The last possible termination date is usually three months in advance. Example: The contract ends on December 27, 2022. The last possible termination is on October 27, 2022.

  4. Now click on


    and then on

    Note your cancellation now


  5. The termination is now noted. To complete it, you have to confirm it within 14 days by calling 0721 960 92 63. You can reach customer service from Monday to Friday from 8 a.m. to 10 p.m. and Samsung and Sunday from 9 a.m. to 9 p.m.

  6. For the termination you need a transaction number in addition to the contract number, which will be sent to you by email. The service pin required for comparison can be found here.

Cancel 1 & 1 - reserve online, confirm by phone


Cancel 1 & 1 – reserve online, confirm by phone

Terminate 1 & 1 contract in writing with submission

You can also terminate your 1und1 contract in writing – without prior notice. All you need is an informal letter with your customer and contract number to the following address:

1 & 1 Telecom GmbH

Elgendorfer Str. 57

56410 Montabaur

You can also simply send the notice of termination using a template. One such template is offered by the subscription alarm service, which you can use to terminate your 1 & 1 contract with a cancellation guarantee. We have summarized in detail how subscription alarm works in our article Canceling a mobile phone contract at Telekom, O2, Vodafone and Co.

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