How does Huawei mate7 set the keyboard sound when sending messages?

The method of setting keyboard sound (key tone) when sending messages in Huawei mate7;

Unlock the phone and enter the phone desktop.

Find "Settings" on the phone desktop, and then click Enter.

Click "Sound" on the settings page to enter.

On the sound page, click to open "Touch Tone".

After the touch prompt tone is turned on, the key tone of the mobile phone will also be turned on.