Messenger isn’t just for exchanging text messages. Now you can start a group video call with as many as 50 people. You can see up to six people on your device at a time, but don't worry if your group is larger: Once more than half a dozen people are in the group, the person who is speaking the most will be shown on the screen to all participants at that time. If you'd rather listen in rather than be on camera, just tap the microphone icon. For those on screen, you can add funny 3D masks—a feature that is currently on iPhones and coming soon to Androids. To start a group video chat, you will need the latest version of Messenger. You can either switch an existing group conversation to a video chat or create a new one by tapping the video icon on the upper right of the screen and everyone in the group will be notified. Each person can enter the group chat when they are ready by tapping the "Join" button (and come and go as they please).