State-of-the-art end-to-end encryption (powered by the open source Signal Protocol) keeps your conversations secure. We can't read your messages or listen to your calls, and no one else can either.

Signal for Mobile Android iPhone or iPad Or visit signal.org/install from your phone

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Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private.

Signal for Android Download for Android Or visit signal.org/install from your phone

Signal users can send private messages and make secure calls to other Signal users anywhere in the world for free over the internet. All Signal-to-Signal communication is private and end-to-end encrypted.

Change the Signal app icon on your phone Edit Message Reply to a specific message Schedule a Message on Signal Android Calling options - Switch camera, microphone, or view Screen Sharing …

Getting Started with Signal Android, iOS or Desktop Installing Signal How to restore your message history Find the Signal App Icon How do I ensure Signal is up to date? Register a phone number Re …

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Features Explore rich features of private messaging. Security This section contains common questions regarding safety and reliability of the technology in the apps.