Jonaki v1.0.0

Offline mesh messaging, SOS and disaster mapping. No internet, SIM, tower or server required.

Phones talk to each other directly over Bluetooth and Wi-Fi, and every phone relays for every other phone. A message reaches people several hops away that you were never near.

Install

Download arm64: Correct for almost any phone from 2017 onward. Use armeabi-v7a only if arm64 refuses to install.

1. Allow installation from unknown sources
2. Grant every permission on first launch: Bluetooth, nearby devices and location are all required to find other phones. Location is never sent anywhere; Android simply refuses to let apps discover nearby devices without it.
3. If Google Play Protect blocks the installation, open your Google Play Store and tap on your profile. Then go to "Play Protect" > "Gear Icon" on the top right > Pause.

Two phones minimum. A single phone will correctly report "No one nearby".

In this release

• Global chat and end-to-end encrypted personal chat
• One-button SOS with location, battery and priority relay, plus a custom emergency type
• Offline street map of central Dhaka with community reports and confirmation
• Everything survives a restart

The ~50 MB download is mostly the offline map.