Find "ringtones+sounds"
Slide your finger left on the display.
Press Settings.
Press Settings.
Press ringtones+sounds.
Turn silent mode on or off
Press the indicator next to Ringer.
Depending on the current setting, silent mode is turned on or off.
Depending on the current setting, silent mode is turned on or off.
If vibration is turned on, your phone vibrates even if silent mode is turned on. Click here for information on how to turn vibration on or off.
Exit
Press the Home key to return to standby mode.