Hello @y2021,

I'm sorry to read that you are facing difficulties with your SIM card. 

I'm happy to help you with your request. On which time are you available for a call, so I can explain the procedure to you?

Kind regards

Malte M.

Thanks for the nice conversation @y2021.

As discussed, please provide me a document where you prove your identity via our form here: https://www.telekom.de/kontakt/e-mail-kontakt/telekom-hilft-kontaktformular?samChecked=true

Please let me know, as soon as you have sent me the document, so I can take the necessary steps.

I look forward to your message. 

Kind regards,

Martin Bo.

Good evening @y2021.

I have updated your name in our system. If you want to add a mobile number to the Telekom login, proceed as follows:

1) Go to the customer center, and click on "Vertrag hinzufügen".

2) Select the item "Bestehenden Vertrag hinzufügen".

3) Now you have the option of adding more mobile numbers or deleting assignments.

If you need further assistance, please let me know.

Kind regards,

Martin Bo.

Thanks for your feedback, @y2021 

I found the problem. 

The number you like to add had an other customer number. 

Now I delete the second customer number and add the contract to your actual customer number. 

Please go into your customer center and check it.

Does it works right now?  

Kind regards 

Carolin L.