A private messenger for Android.
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.github Update the issue template. Mar 31, 2018
.tx Updated language translations. Nov 15, 2018
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apntool update APN list, fix MMSC issues Mar 12, 2015
artwork Change the app icon Mar 14, 2017
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gradle/wrapper Update Android plugin to 3.0.0 Nov 6, 2017
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res Updated language translations. Nov 15, 2018
src/org/thoughtcrime/securesms Dismiss emoji variation popup when keyboard is dismissed. Nov 15, 2018
test Added OrderEnforcer class to schedule ordered tasks. Sep 27, 2018
website Support for website distribution build with auto-updating APK Feb 28, 2017
.gitattributes materialize conversation item indicators Nov 18, 2014
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AndroidManifest.xml Register RotateSenderCertificateListener in the manifest. Nov 13, 2018
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LICENSE Initial Project Import Dec 20, 2011
NOTICE Initial Project Import Dec 20, 2011
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proguard-appcompat-v7.pro Giphy integration Oct 18, 2016
proguard-automation.pro Fix the faulty tests in AttachmentDatabaseTest.java Jan 12, 2017
proguard-dagger.pro refactor proguard rules Apr 2, 2015
proguard-ez-vcard.pro Convert vCard attachments to Shared Contacts. May 21, 2018
proguard-glide.pro Update to glide 4.x Oct 12, 2017
proguard-google-play-services.pro refactor proguard rules Apr 2, 2015
proguard-jackson.pro refactor proguard rules Apr 2, 2015
proguard-klinker.pro Add proguard config for klinker library May 12, 2017
proguard-okhttp.pro Add splash screen for setting profiles Sep 4, 2017
proguard-retrofit.pro Support for Signal calls. Sep 30, 2015
proguard-retrolambda.pro Join recipient preferences into thread query for faster lookup Aug 28, 2017
proguard-rounded-image-view.pro refactor proguard rules Apr 2, 2015
proguard-shortcutbadger.pro Add proguard rule for ShortcutBadger now that they use reflection. May 8, 2015
proguard-spongycastle.pro Forgot that we do need the JCE EC stuff Mar 14, 2016
proguard-sqlite.pro Migrate from SQLite and ciphertext blobs to SQLCipher + KeyStore Jan 31, 2018
proguard-square-okhttp.pro refactor proguard rules Apr 2, 2015
proguard-square-okio.pro refactor proguard rules Apr 2, 2015
proguard-webrtc.pro Beta support for webrtc video and voice calling Feb 1, 2017
proguard-workmanager.pro Fix the command line build. Oct 1, 2018
proguard.cfg Switch RedPhone view<->service interaction to use event bus Nov 5, 2015


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: https://play.google.com/apps/testing/org.thoughtcrime.securesms

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 BUILDING.md.

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 CONTRIBUTING.md, 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 http://www.wassenaar.org/ 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: http://www.gnu.org/licenses/gpl-3.0.html

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