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There can be a wide variety of reasons for terminating your mobile phone contract. The reception at home is too bad, the data network too lame, a better offer from a competitor is tempting or the monthly costs are too high. I can't know why you want to cancel your T-Mobile contract, but I can show you a few simple ways how to do this without stress and which common questions there are about canceling your contract.
With the website or the app from Aboalarm, the termination of a T-Mobile contract is done relatively quickly.
Cancellation by email is unfortunately not possible. But this also has to do with the fact that an email can quickly be "faked". So another person could forge the sender and cancel the cell phone contracts for other people and ideally still take their call with them. To prevent this from happening, Telekom expects you to be terminated by post (in writing) or by fax on 0180-5 330633 (€ 0,14 / min. From landlines, mobile phones max. € 0,42 / min.).
If the post is too cumbersome for you and if you don't have a fax, you can still choose a quick option: termination via the App or the Subscription alert website. There you just have to enter your data in a form and you can give the cancellation at the push of a button. The website advertises with the slogan "Free telecom cancellation letters with online fax dispatch" ... that already shows: It's quick and cheap here. :)
On its website, Telekom already offers a small selection of the most frequently asked questions relating to the termination of the contract. Get Tickets here! you will find the questions and the answers. There is even a question-and-answer section on the website help.telekom.de, on which you can even find instructions on how to terminate the mobile phone contract with Telekom directly online. You can find the corresponding subpage for the online cancellation here at t-mobile.de.
But I would like to explain a few questions and corresponding answers to you right here:
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.