Yealink SIP-T56A User Manual page 193

If a USB flash drive has been connected to your phone, you can tap
Photos/Videos/Audios in the USB Storage field to view the files stored in USB flash drive.
Your files will display as a list.
Drag up and down to scroll through the files if required.
4.
Tap the checkbox(es) before the desired file(s).
5.
Tap .
6.
The following prompt will appear on the touch screen of the phone:
Tap the desired storage device to copy the file to.
7.
Tap to accept the change or
8.
to cancel.
System Applications
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