- What are Threema calls?
- What are the system requirements for Threema calls?
- How do I place a voice or a video call?
- How can I disable Threema calls?
- What is the bit rate of Threema calls?
- I hear my own voice as an echo – what can I do?
- How secure are Threema calls?
- Threema calls: What do those sounds mean?
- How do I adjust the image quality of video calls?
- Video transmission doesn’t work properly: What can I do?
- The connection can not be established. What can I do?
How secure are Threema calls?
Threema calls are as secure as Threema messages. Just like Threema messages, voice calls and video calls are end-to-end encrypted. The call connection is established using Threema messages in the background; therefore, Threema calls are just as trustworthy as chats, and the same verification levels apply.
Instead of a phone number, the Threema ID is used as unique identifier. This allows you to make end-to-end encrypted voice or video calls without disclosing your phone number.
Learn more about Threema calls here.