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Signal Blog

Label yourself Put a pin in it Signal Polls: Yes, no, maybe (yes!) Signal Protocol and Post-Quantum Ratchets Introducing Signal Secure Backups By Default, Signal Doesn't Recall A Synchronized Start for Linked Devices Improving Private Signal Calls: Call Links & More Proxy Please: Help People Connect to Signal Keep your phone number private with Signal usernames Trend report: Use Signal Privacy is Priceless, but Signal is Expensive New Features Roll Call: Fall 2023 Quantum Resistance and the Signal Protocol Standing firm against threats to private and safe communication Signal is for everyone, and everyone is different Story Time Removing SMS support from Signal Android (soon) Help people in Iran reconnect to Signal – a request to our community A Message from Signal's New President Technology Deep Dive: Building a Faster ORAM Layer for Enclaves Signal Your Support You Can Change Your Number New year, new CEO How to build large-scale end-to-end encrypted group video calls Become a Signal Sustainer Improving first impressions on Signal Embrace ephemerality with default disappearing messages The Instagram ads Facebook won't show you Exploiting vulnerabilities in Cellebrite UFED and Physical Analyzer from an app's perspective
Adding Encrypted Group Calls to Signal
2020-12-14 · via Signal Blog

An illustration Signal group calls.

2020 has seen its fair number of challenges and changes. We’ve all adapted to new ways of staying in touch, getting work done, celebrating birthdays and weddings, and even exercising. As more and more of our critical and personal moments move online, we want to continue to provide you with new ways to share and connect privately.

Today, we’re launching group calls in Signal with the latest versions of our apps. Group calls are free, private, and end-to-end encrypted — like everything else on Signal.

Call Me Maybe

Now when you open a group chat in Signal, you’ll see a video call button at the top. When you start a call, the group will receive a notification letting them know a call has started.

When you start or join a group call, Signal will display the participants in a grid view. You can also swipe up to switch to a view that automatically focuses the screen on who is speaking, and it will update in real time as the active speaker changes.

Hung Up

Signal Group Calls are one of many features that we have designed with Signal Private Groups as a foundation, using our RingRTC library for handling frame encryption and the logic around setting up and joining calls.

Ring, Ring

Free group calls are available starting today. Update your apps to the latest versions to get started. Group calls are only supported in new style Signal groups. You won’t see the call button in your legacy groups, but your legacy Signal groups will start automatically updating to New Groups in the coming weeks. Group calls are currently limited to 5 participants, but we’re working to let you have even more participants in a group call soon. We hope group calls are a helpful new way to connect!