Frequently asked questions

Foto zeigt die Corona-Warn-App


Photo: Bundesregierung/Tybussek

Where can I find technical help for the Corona-Warn-App?
Answers from the developers (including SAP) to the most common technical questions about the Corona-Warn-App can be found in this FAQ and Blog or  call Freephone +49 800 754 0001 or +49 30 498 75401 (from outside Germany). The TAN hotline is available by calling +49 800 7540002 or +49 30 498 75402 (from outside Germany).

Why do we need a Corona-Warn-App?openMinimise

What does the Corona-Warn-App do?openMinimise

How does the Corona-Warn-App work?openMinimise

Am I obliged to use the Corona-Warn-App?openMinimise

Why should I use the Corona-Warn-App?openMinimise

Who is behind the Corona-Warn-App?openMinimise

What are the minimum device requirements?openMinimise

What has improved with the updates?openMinimise

Which criteria are used to assess potential exposures, and what are the different recommendations for action?openMinimise

When does the Corona-Warn-App actually warn users?openMinimise

How does using the Corona-Warn-App affect the battery life and storage space of smartphones?openMinimise

Why do we need a central server for a distributed solution? Isn’t that a contradiction?openMinimise

How are data security and data protection ensured for the Corona-Warn-App?openMinimise

What personal data does the Corona-Warn-App store?openMinimise

Can the Corona-Warn-App also be downloaded internationally and used on a cross-border basis? How do you ensure the interoperability of the Corona-Warn-App in Europe?openMinimise

Is the "increased risk" warning by the Corona-Warn-App enough for sick leave or ordering quarantine?openMinimise

The glossary PDF, 112 KB, accessible provides explanations for all the terms used in the Corona-Warn-App.

Do you have any questions about using the app or how it works? Please get in touch with us.

For information in further foreign languages please see the website of the Federal Government Commissioner for Integration.