Information center

Do you want to know more about the largest fibre optic network in Europe? 

Do you need an example of how our services are applied in other companies?

Do you seek information on e-invoicing? Or perhaps you want to become a T-Mobile Partner?  

We are at your service 24 hours per day, 7 days per week, 365 days per year. Our Customer Care consultants will answer all questions you might ask. Please feel free to contact us in any way you find convenient:


  • call us at one of the following numbers: 22 488 03 00, 800 900 900 or fax your message to: 22 488 03 01.
  • in order to obtain technical support, please email our Customer Care Department at: or use the contact form.
  • if you wish to submit a claim or complaint, please use one of the following forms:
  • Complaint form business customers
  • Complaint form for Resellers