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1. Open the songs list by tapping Home Key > > Music >
Songs.
2. Hold the song you like until the shortcut menu pops up.
3. Select Use as phone ringtone.
Set the default notification ringtone
1. Select Notification ringtone from the Sound & display settings.
2. Scroll the ringtone list and select one to set as the default
notification ringtone.
3. Tap OK to save.
Switch your phone to silent mode
1. Select the Silent mode check box from the Sound & display
settings.
2. You can also switch to silent mode by holding Volume Key
(Down) or, when the screen is locked, by dragging the Sound
off bar to the left, as shown below.