In every single-chat there is an earphone icon. If you tap the icon a voice call with your communication partner will be initiated. During the call you can click on the video icon and the camera will be activated (for further information on the icons go to –> “What do the icons at the bottom mean when I am on the phone?”). Your communication partner and you are now able to see each other.
On the main screen you can see all made and missed calls in a call log.