KOCASO M776H - Manual (Page 21)

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Picture 3.13
3. Display the file you received
Choose display the file you received in Picture 3.12, you can view download and
upload files.
4. Bluetooth advanced setting
Choose Bluetooth advanced setting in Picture 3.12, enter into Picture 3.14
Picture 3.14
5. File transmission
Open file transmission service, Connect Bluetooth FTP and customer device to visit
and operate the file.