I used Android File transfer to copy some jpegs to my phone from my mac. When I checked, all I had were blanks. The I started getting the error message "if you phone screen is locked, unlock and reconnect the USB cable. I did but the same thing happened. I was able to copy .mov and .mpeg-4 files but not the jpegs. I can copy pics from the camera to the mac but not the other way.
Can someone tell me what I'm doing wrong? Just want to get some pics on my Nexus.