The data displays the mobile customer development of of Deutsche Telekom in Germany from the first quarter of 2011 to the fourth quarter of 2017. In the fourth quarter of 2017, the telecommunications provider had roughly 25.89 million contract customers with a postpaid phone plan. Customer figures occasionally fluctuated slightly during the period of evaluation, but otherwise they generally remained stable and grew steadily in almost each quarter. The first quarter of 2011 saw the Deutsche Telekom with 17.2 million mobile contract customers, a figure that rose to over 25 million customers by the end of 2016.
