interface, as shown in the right figure below:
8.2 Delete files
In the voice playback stop interface, long press the "volume"
button, the function menu will pop up:
Delete files and delete all.
In the delete interface, use the " " or " " button to select
to delete a single file or all files; select "Yes" to confirm the
deletion, select "No" to keep the file; press the confirm
button to execute the command.
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