https://www.telekom.de/hilfe/vertrag-rechnung/login-daten-passwoerter/mehrere-mobilfunk-nummern-mit-einem-telekom-login?samChecked=true To add mobile numbers to the Telekom login, proceed as follows: In the Customer Center, click on the "Add contract" ("Vertrag hinzufügen".) tile. Select the item "Add existing contract" ("Bestehenden Vertrag hinzufügen"). Now you have the option to add additional mobile phone numbers. Note: You can only add phone numbers that are assigned to the same mobile phone customer number. If necessary, you will have to have our customer service merge the customer numbers. Translated with www.DeepL.com/Translator (free version)

https://www.telekom.de/hilfe/vertrag-rechnung/login-daten-passwoerter/mehrere-mobilfunk-nummern-mit-einem-telekom-login?samChecked=true

 

To add mobile numbers to the Telekom login, proceed as follows:

• In the Customer Center, click on the "Add contract" ("Vertrag hinzufügen".) tile.
• Select the item "Add existing contract" ("Bestehenden Vertrag hinzufügen").
• Now you have the option to add additional mobile phone numbers.
  Note: You can only add phone numbers that are assigned to the same mobile phone customer number. If necessary, you will have to have our customer service merge the customer numbers.

Translated with www.DeepL.com/Translator (free version)