Find "ringtones + sounds"
Press arrow right to access the main menu.
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.
When silent mode is turned on, the silent mode icon is displayed in standby mode.
Exit
Press the Home key to return to standby mode.