Relax Pass and relaxed deals for postpaid, prepaid and congstar at home.

Black No Stress Friday

Stress on Black Friday? Not with congstar. With fair deals without hidden or later additional costs and the congstar Relax Pass, Black Friday at congstar will be “Zero Stress Friday”! From 20.11.2025, congstar will convince with simple and transparent offers for mobile communications and home Internet with the usual flexibility. In addition to new customers, existing congstar customers will also benefit from the “No Stress Friday” campaign and can enjoy a bargain at their leisure.

No stress with the Relax Pass

For a short time only, from 20.11.-04.12.2025, customers of the congstar Allnet Flat tariffs can secure extra data volume at a fair and transparent price. For Allnet Flat M and L customers, there is a free Relax Pass, which can be used to consume even more data if required without any stress. In addition, the provisioning fee is waived for all congstar Allnet Flat tariffs (XS, S, M and L) and the congstar Homespot tariffs when booking during the promotional period.

Update 25.11.: From now until 04.12.2025 there is even more data volume in the Allnet Flat S – customers now get a whopping 75 GB for the unbeatable price of just €19/month!

This is how the Relax Pass works: Thanks to the Relax Pass, Allnet Flat M customers can book an additional 100 GB and Allnet Flat L customers can even book an additional 150 GB of free data volume as soon as they have used up 80% (i.e. 80 or 120 GB) of their regular data volume. The Relax Pass can then be activated directly in the congstar app or at datapass.de.

• Allnet Flat XS with 10 GB for €14/month
• Allnet Flat S with 50 75 GB (instead of 25 GB) for €19/month
• Allnet Flat M with 100 GB for €24/month + 100 GB Relax Pass
• Allnet Flat L with 150 GB for €26.10/month (instead of €29) + 200 GB Relax Pass

Prepaid: Extra data volume and starter package prices for just 1 euro

Your congstar prepaid customers will also benefit from attractive “Zero Stress Friday” offers with lots of data volume and minimal costs. For all tariffs, the one-off starter package price will be reduced to €1 (instead of the regular €9.99) from 20.11-04.12.2025. The data volume will also be increased. Use in the first four weeks is already included in the starter package price.

• Prepaid Allnet Flat XS with LTE 25 and 1 GB for €5/month
• Prepaid Allnet Flat S with 5G25 and 5 GB for €7/month
• Prepaid Allnet Flat M with 5G25 and 30 GB for €10/month
• Prepaid Allnet Flat L with 5G25 and 40 GB for €12/month
• Prepaid Allnet Flat XL with 5G25 and 50 GB for €16/month

congstar at home: stress-free Internet in your own four walls

With congstar Zuhause, surfing at home also becomes flexible and stress-free. When booking a congstar Zuhause tariff from 20.11.-08.12.2025, congstar Zuhause 100 (with up to 100 Mbit/s) is available for €33/month. congstar Zuhause 250 (with up to 250 Mbit/s) is available for €40/month. Two further stress-free highlights: The provisioning fee of €50 is waived for both tariffs during the promotional period and a free FRITZ!Box 7530 AX can be optionally ordered for rent – it doesn’t get much more stress-free than that!