While you're here, Always Relay Calls, a feature which takes all your calls through a Signal server, thus hiding your IP address from the recipient, might be worth enabling, but it does degrade call quality. Incognito Keyboard (Android only): Prevents the keyboard from sending what you type to a third-party, which might allow sensitive data to leak.Registration Lock (iOS and Android): Requires your PIN when registering with Signal (a handy way to prevent a second device being added).Enable Screen Security (iOS) or Screen Security (Android): On the iPhone this prevents data previews being shown in the app switcher, while on Android it prevents screenshots being taken.Screen Lock (iOS and Android): Means you have to enter your biometrics (Face ID, Touch ID, fingerprint or passcode) to access the app.There are three settings on iOS and four on Android I recommend turning on, and a few others worth taking a look at. To get there, tap on your initials in the top-left corner of the screen (on Android you can also tap the three dots on the top-left and then Settings). It can be seen that the data sent by the server is printed on the terminal running the client program.
Run the server program first, followed by running the client program. The first place you should head over to is the Settings screen. Instructions to Execute : Open two terminals on your machine and compile the server and the client programs in different terminals. There are some cosmetic differences between the iOS and Android versions of Signal, but these tips apply to both platforms. There are a few settings I suggest you enable.
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