SMSecure
* Improved dual-SIM recovery and service-state monitoring.
* Reorganized Settings with separate diagnostics, About, build information, and license sections.
* Updated translations and dependencies.
* Retried transient modem send failures once.
* Recovered stale SIM bindings safely.
SMSecure is a fork of Silence/TextSecure, created to preserve encrypted SMS functionality on modern Android devices. It keeps the familiar feel of a classic SMS app while adding tools for private, verified conversations.
🔐 Encrypted SMS conversations
Use end-to-end encrypted SMS with compatible contacts. SMSecure uses the Signal encryption protocol for secure conversations when both sides support it.
🛡️ Identity verification
Verify contacts using QR codes or safety numbers to help protect against man-in-the-middle attacks.
📱 Works as a normal SMS app
Send and receive regular SMS messages without creating an account, signing in, or depending on a central messaging service.
🚫 Block unwanted messages
Block unwanted senders, including unknown or alphanumeric SMS senders, and keep your inbox cleaner.
🔎 Search your conversations
Quickly find messages across all conversations with global search.
💾 Backups and restore
Create and restore message backups so you can keep your SMS history under your control.
🌍 Local-first privacy
Messages are processed on your device. SMSecure does not require registration, does not use ads, and does not collect user data.
⚠️ Important note
SMS only for now: MMS support is planned for a future release. Currently, SMSecure cannot send, receive, display, or download MMS messages.
End-to-end encryption works only when both sides use compatible software. Regular SMS messages are still regular SMS and are handled by the mobile network.
🧩 Free and Open Source
SMSecure is Free and Open Source Software licensed under GPLv3. The source code is available for review, auditing, and contribution.
Open-Source Code: https://github.com/jimvixx/ShortMessageSecure
- Author: Jimvixx
- License: GNU General Public License v3.0 only
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Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid-
This version requires Android 7.0 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Download APK 11 MiB PGP Signature | Build Log
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This version requires Android 7.0 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Download APK 10 MiB PGP Signature | Build Log
-
This version requires Android 7.0 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Download APK 10 MiB PGP Signature | Build Log
* Improved diagnostics, reliability, and stability.
* Crashes when opening details for unsupported message types.
* Clean up completed delivery tracking records.
* Improved privacy-safe diagnostics for SMS sending failures.