Whether you prefer complete silence or just want to mute unnecessary sounds like keypad tones when dialing a number to make a call.
Here's how to turn off keypad sounds on Obi Worldphone S507:
Step 1: Navigate to Settings.

Step 2: Select Sounds & Notifications.

Step 3: Choose Other Sounds.

Step 4: Toggle Keypad Dial Sounds On or Off.

Wishing you all success.
