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Greyson Parrelli 1f85b1f3d2 Bump version to 4.49.3 13 hours ago
.github Update the issue template. 1 year ago
.tx Updated language translations. 7 months ago
apkdiff Ignore resources.arsc in 5 months ago
apntool update APN list, fix MMSC issues 4 years ago
artwork Change the app icon 2 years ago
assets Update emoji. 3 months ago
buildSrc Add version and spread out witness information. 2 days ago
gradle/wrapper Upgrade Gradle to 5.6.2 and AGP to 3.5.1 2 days ago
jni Transcode video during attachment upload. 2 months ago
libs Transcode video during attachment upload. 2 months ago
protobuf Add ringrtc support. 2 days ago
res Updated language translations. 13 hours ago
src/org/thoughtcrime/securesms Cleanup some possible bad RecipientIds in the MMS table. 13 hours ago
test Local SMS rate limiting. 2 days ago
website Fix tap-to-upgrade on website releases. 9 months ago
.gitattributes materialize conversation item indicators 4 years ago
.gitignore Apply new Signal icons and color palette. 2 days ago
AndroidManifest.xml Improved registration flow. 2 days ago Remove reference to Pixelapse in 1 year ago Update the Android Transifex links in 1 year ago
Dockerfile Updated Gradle to 5.1 8 months ago
LICENSE Initial Project Import 7 years ago
NOTICE Initial Project Import 7 years ago Changed URL of the user forum. 1 year ago Bring the Reproducible Builds instructions and script into repo. 5 months ago
build.gradle Bump version to 4.49.3 13 hours ago Convert to AndroidX. 4 months ago
gradlew Upgrade Gradle to 5.6.2 and AGP to 3.5.1 2 days ago
gradlew.bat Upgrade Gradle to 5.6.2 and AGP to 3.5.1 2 days ago
lint-baseline.xml Update Lint suppressions. 2 days ago
lint.xml Update Lint suppressions. 2 days ago
pkcs11.config Update release config 11 months ago Giphy integration 3 years ago Fix the faulty tests in 2 years ago Convert vCard attachments to Shared Contacts. 1 year ago FCM improvements. 8 months ago Update to glide 4.x 2 years ago refactor proguard rules 4 years ago refactor proguard rules 4 years ago Add proguard config for klinker library 2 years ago Add splash screen for setting profiles 2 years ago Support for Signal calls. 4 years ago Join recipient preferences into thread query for faster lookup 2 years ago refactor proguard rules 4 years ago Add proguard rule for ShortcutBadger now that they use reflection. 4 years ago Migrate from SQLite and ciphertext blobs to SQLCipher + KeyStore 1 year ago refactor proguard rules 4 years ago refactor proguard rules 4 years ago
proguard.cfg Switch RedPhone view<->service interaction to use event bus 4 years ago
witness-verifications.gradle Update CameraX to Alpha06 and bring in new View / Module code. 1 day ago

Signal Android

Signal is a messaging app for simple private communication with friends.

Signal uses your phone’s data connection (WiFi/3G/4G) to communicate securely, optionally supports plain SMS/MMS to function as a unified messenger, and can also encrypt the stored messages on your phone.

Currently available on the Play store.

Get it on Google Play

Contributing Bug reports

We use GitHub for bug tracking. Please search the existing issues for your bug and create a new one if the issue is not yet tracked!

Joining the Beta

Want to live life on the bleeding edge and help out with testing?

You can subscribe to Signal Android Beta releases here:

If you’re interested in a life of peace and tranquility, stick with the standard releases.

Contributing Translations

Interested in helping to translate Signal? Contribute here:

Contributing Code

Instructions on how to setup your development environment and build Signal can be found in

If you’re new to the Signal codebase, we recommend going through our issues and picking out a simple bug to fix (check the “easy” label in our issues) in order to get yourself familiar. Also please have a look at the, that might answer some of your questions.

For larger changes and feature ideas, we ask that you propose it on the unofficial Community Forum for a high-level discussion with the wider community before implementation.

Contributing Ideas

Have something you want to say about Open Whisper Systems projects or want to be part of the conversation? Get involved in the community forum.



For troubleshooting and questions, please visit our support center!


Looking for documentation? Check out the wiki!

Legal things

Cryptography Notice

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country’s laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.


Copyright 2011 Whisper Systems

Copyright 2013-2017 Open Whisper Systems

Licensed under the GPLv3:

Google Play and the Google Play logo are trademarks of Google Inc.