How to change the font size in Signal for your display and messages on a computer or mobile device

You can change your font size in Signal on the secure-messaging platform's desktop, Android, and iPhone apps.

How to change the font size on your Android device, or zoom in the display to make everything larger

You can change the font size on your Android phone or tablet by heading to your device's Accessibility menu.
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Gboard rolling out its own keyboard ‘Font size’ setting

Besides a pill-shaped tweak for the Suggestion strip, Gboard’s next visual change is a dedicated keyboard Font size setting. Once available on your device, Gboard will display a “Keyboard font size ...