Home Blog Archive iPhone/iPad Number portability in the case of 1&1 - so it works

Number portability in the case of 1&1 - so it works

  • Sep 20, 2025
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Number portability in the case of 1&1 is assumed to a large extent by the providers themselves. However, you should note a few things so that the port works smoothly.

Number to 1&1 to take: contract customers

  • You cancel your old contract. Notice templates for many of the providers you can find in our Download area. The notice period is at most of the providers of three months.
  • You have to order a new contract or a Prepaid card with 1&1. During the order process you specify that you want to take your old phone number.
  • Please note that all personal information, such as address and date of birth must match those of your old provider.
  • For the number portability, the old provider usually demands a fee between 25 and 30 euros. 1&1 writes to you, however, 25 Euro, so you will not be left with the costs.
Number take to 1&1
In the next practical tip we show you how you can a cost limit at 1&1 set up.

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