Signal is a free and open source software application for Android, iOS, and Desktop that employs end-to-end encryption.
- All Signal-to-Signal communication is private and end-to-end encrypted.
- Signal-to-Signal messages are secure and free to send and receive using any internet connection enabled on your phone, including WiFi and mobile data.
- Signal can also serve as your unified messenger for insecure SMS/MMS messages in addition to Signal messages. Insecure SMS/MMS messages are sent through your mobile provider.
#1 – Download and Install Signal
#2 – Register and Verify your Phone Number
You can tap “continue” and Signal will lead you through granting these permissions, one by one.
Enter your mobile phone number and tap “Register.”
#3 – Set Signal as your default SMS app
By tapping “Use as default SMS app,” you can have the Signal app handle both Signal as well as SMS messages.
This is useful if you want to keep all your messages in one place.
#4 – Import current SMS messages
#5 – Tell everyone you know to install Signal
View a complete EFF guide