I mounted usb in my galaxy note 5 and I transferred my vacation pics into USB. I used es file explorer app to transfer my data. When usb hitted the size limit, it froze so I pulled out and putted back in, entire data has gone! Size is still full in usb but i can't find my data. it's not deleted. i tried show hidden files but i couldn't find anything. also tried various data recovery program Recuva but i got no result you can try it by yourself. it happens all the time. transfer more size than usb size (you can try transferring 2% of usb the size while usb contained 99% of the size) It happens when it exceed the size during transfer. ANY SOLUTIONS? I REALLY NEED IT BACK. i have pic of my usb. those 1kb no extention file name is not created by me.