Delete All
1.Under Voice Playback mode.
2.Press Menu Button and press 
to select Delete All mode.
3.Press Shutter/OK button to delete all voice messages, press Menu button to exit.
Protect
1.Under Voice Playback mode.
2.Press Menu Button and press 
to select Protect mode.
3.Press 
to select ON to protect current voice message.
4.The Protect symbol will be shown on the top right of picture or video clip.
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