Questions to the Investor Relations department

Please understand that the Investor Relations department will only answer questions related with the Telefónica Deutschland share.

You are a customer?

For questions related to your mobile or DSL contract please contact our customer service team:
Contact to O2 for O2 customers in Germany. Questions regarding your O2 mobile or DSL contract.

You are shareholder or an interested party into the Telefónica Deutschland share?

Our Investor Relations-Team we will be at your full disposal answering all the stock related questions.

Hotlines and E-Mail support

O2 customer services Blau customer services BASE customer services Fonic customer services netzclub customer services Türk Telekom Mobile customer services