Hello @Frano33,

Welcome to the o2 Community.

What kind of contract do you have? Have you already canceled or is the minimum term just expiring? 

Kind regards 

Lea

I have already canceled my contract.

Can I take a prepaid card with my existing phone number?

Hello @Frano33  

Yes, you can port the number from o2 Postpaid to o2

​​Prepaid with this form when the o2 Prepaid Card is active. 

https://www.o2online.de/assets/blobs/pdfs/internes-portierungsformular/ 

or without this formular to another provider. 

Hello @Frano33 
Did the link from Bollermann help you? Please let us know if we can help you further 
Best regards, Kathi