You can disable the feedback sound when typing on your device.
Here's how to turn off the typing sound on Sony Xperia XZ1:
Step 1: Access input settings.
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Step 2: Choose the SwiftKey keyboard.
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Step 3: Go to the Typing section.
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Step 4: Navigate to the Sound and Vibration category.
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Step 5: Drag the slider to 0 for both vibration and sound or turn them off.
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Congratulations, you have successfully completed the setup. Best of luck to all of you.