Switching to Signal? Turn on these settings now for greater privacy and security
The first place you should head over to is the Settings screen. 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). There are three settings on iOS and four on Android I recommend turning on, and a few others worth taking a look at. Screen Lock (iOS and Android): Means you have to enter your biometrics (Face ID, Touch ID, fingerprint or passcode) to access the app Enable Screen Security (iOS) or Screen Security (Android): On the iPhone this prevents data previews being shown in the app swi...
Source: zdnet.com