Signal Messenger
Encrypted Instant Messaging

secure messaging
Message friends and family over Wifi or your data connection. Signal includes audio and video call capabilities.
install
Instructions
1. Download the APK from the above link and copy to your flashdrive.
2. Insert the flash drive into your Ghost Phone with the USB-C adapter.
3. Tap "Explore" on the notification that appears.
4. Tap Signal.apk
5. Tap "continue" on the popup that appears, then "Install."
6. Enjoy.