Apps: Signal
Last updated: September 17, 2025
What Signal is an end-to-end encrypted messenger for 1:1 and groups with voice/video. Package: org.thoughtcrime.securesms.
Why on Zer0
- Strong default crypto; audited protocol.
- Works without Google Play Services (uses websocket fallback for push).
Safe use
- Set a registration lock PIN; enable disappearing messages by default.
- Review contacts/phone permissions; manual adds are possible.
- Do not route Signal through Tor/Orbot; it can break service and is not supported.
- Keep OS and app updated promptly.
Limits
- Phone-number identity model; contact discovery may reveal metadata.
- Without Play Services, background delivery can be less reliable and use more battery.
Links
- Website/APK: https://signal.org
- Support: https://support.signal.org
- Store: Andromeda Store
Verify
- If installing from Signal's site, verify the APK signature and checksum as published by Signal.
- Keep signing key continuity for updates; avoid mixing sources.
- See: Verify