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1

Look for the volume rocker on the side of the phone. Press the lower side of the volume rocker to take the volume down.

Look for the volume rocker on the side of the phone. Press the lower side of the volume rocker to take the volume down.
2

Continue to press to take the volume down to the required level

Continue to press to take the volume down to the required level
3

Continue to press for vibration mode, which is approved with a short vibration

Continue to press for vibration mode, which is approved with a short vibration
4

Press once more for silent mode

Press once more for silent mode
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Turn sound on/off

HTC Desire 12s

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