Signal Android: Private messaging application for Android
Open-source Android messaging app with end-to-end encryption for texts, voice, and video calls.
Learn more about Signal Android
Signal Android is a secure messaging client that uses the Signal Protocol for end-to-end encryption across all communications. The application operates over standard internet connections (WiFi/cellular data) and integrates cryptographic functions with asymmetric algorithms for message and call security. It maintains a local database for message storage while ensuring that communications remain encrypted in transit and at rest. The application serves users requiring private communication channels for personal and professional messaging needs.
End-to-End Encryption
Implements the Signal Protocol with asymmetric cryptographic algorithms for all messages and calls. Communications are encrypted locally before transmission and can only be decrypted by intended recipients.
Open Source Architecture
Source code is publicly available under GNU AGPLv3 license, allowing for community review and contributions. The transparent codebase enables security auditing and verification of privacy claims.
Cross-Platform Synchronization
Supports message synchronization across Android, iOS, and desktop clients using the same phone number identity. Messages and calls can be seamlessly accessed across multiple devices while maintaining encryption.
Top in Mobile & Desktop
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