Want your brand on this page?Advertise with us
Quick Tips
- Have your account details ready before calling 1&1 Telecommunication SE
- Note the exact error message or issue you are experiencing
- Ask for a reference number for your complaint
How to Reach 1&1 Telecommunication SE Customer Care
- 1Call the helpline — Dial 0911284711.
- 2Visit the official website — Go to 1und1.de for online complaint registration, FAQs, and self-service options.
- 3Escalate if unresolved — If your issue is not resolved within the expected timeframe, ask for a complaint reference number and escalate to the grievance redressal cell.
Common 1&1 Telecommunication SE Issues
Users commonly contact 1&1 Telecommunication SE customer care for these issues:
Network gone completely
Data not working
Can't make calls
Bill payment / top-up failing
Experiencing an issue? Report it on the status page to alert other users.
Related Helplines
Disclaimer: Helpline numbers and contact details are subject to change. Always verify the latest information from the official website.
Is 1&1 Telecommunication SE down right now?
Check live status, report issues & see if others are affected