Question: how to transfer files from phone to ps3 via usb?
Answer: Insert the USB cable into the phone. ... 
Plug the flat USB end into one of the PS3's USB ports.
Power the PS3 system on, and allow it to load. ... 
Scroll to "Video", "Music" or "Pictures" on your PS3 home screen using the "Left Analog Stick." This will allow you to see if the phone has been read by the system properly.