Movement data, postal code, age, gender: The mobile phone providers know some of your data and also evaluate it – sometimes this information is also passed on to third parties.
But not everyone wants that.
If you are one of them, you can unsubscribe from tracking in just a few steps. However, there is a catch, because of the three major providers Telekom, o2 and Vodafone offers one has no option in addition.
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