When typing on the Samsung keyboard, the keypad tones are played, and the keypad tone can be turned on or off in both the System Tones settings and the Samsung keyboard settings.

Android 10 (One UI 2.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Sounds and vibration
Step 3:  Tap on  System sound
Step 4:  Enable or disable  Samsung Keyboard
  1. Open the Settings
  2. Tap on Sounds and vibration
  3. Tap on System sound
  4. Enable or disable Samsung Keyboard

Samsung Instructions
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