Open Settings
Tap Sounds and haptics
Turn off Keyboard Clicks
Turn off Lock Sound if needed
On Android, open Settings
Tap System or Sound and vibration
Turn off Dial pad tones, Screen locking sounds, and Keyboard sounds
In Gboard, open Keyboard settings
Turn off Sound on keypress
In Samsung Keyboard, open Keyboard settings
Turn off Sound and vibration
On iPhone, mute the device with the silent switch if needed