Samsung SCH-R530RWBMTR - Manual (Page 29)

Side Views
1. Volume Key: From the Home screen, touch to adjust
Master Volume. During calls or music playback, press
to adjust volume. Press to mute the ringtone of an
incoming call.
2. USB Power/Accessory Port: Connect a USB cable for
charging or to sync music and files.
3. Power/Lock Key: Press and hold to turn the phone on or
off. Press to lock the phone or to wake the screen for
unlocking.
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