HP f870x - Adjusting the Settings; 6.1 Using the Menu

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1. Deleted files cannot be recovered. Ensure the files have been backed-up before deletion.
2. If you find the downloaded files could not be played or without audio, which means the mobile
device itself does not support the video decoding. It’s not the problem of the file. We recommend
you to install a free App software such as VLC to playback the file.