Huawei
Enable or Disable Keypad Tones auf Huawei
Keypad tones are the short clicks or melodies your Huawei phone plays every time you tap a key on the on-screen keyboard. This feedback sound is controlled separately from your ringtone, notification sound, and touch vibration, so muting your phone does not automatically silence it.
The setting sits inside the general sound menu, not inside the keyboard app itself. That is why some users search the wrong place when trying to turn it off.
To change it, open Settings ➔ Sounds & vibration ➔ More sound settings ➔ Keypad tones. There you can pick None to disable the sound completely, Default for the standard click, or Melody for a softer tone sequence.
If you still hear a sound after selecting None, check whether your third-party keyboard app has its own separate sound setting active in its own app settings. In that case, the system-level keypad tones option has no effect, since the keyboard app overrides it.
Turning keypad tones off does not disable haptic feedback (vibration on tap), which is a separate setting under the same sound menu.