Establish a Voice Call
Select the desired contact in your contact list and tap the phone icon in the title bar (Android), or tap “Call” (iOS). Alternatively, tap the phone icon in a chat’s title bar.
Enable Video
Video transmission can be enabled at any time during an ongoing call. Once a Threema call is established, both parties can independently enable and disable video transmission by tapping the camera icon. This is to say that it’s possible to conduct one-way video calls.
Please note that the system requirements must be met by both the caller’s and the callee’s device in order to make voice or video calls.
