I never knew that Android devices / smartphones could not connect / sync directly to / with Mac OS. A friend of mine called me and threw this query at me. Then I realized that connecting Android to Mac is not any art, here is its tutorial.
STEP 1: To start with, simply restart your Android device / smartphone. You can even skip this step, but it is recommended to follow when your Mac OS doesn’t recognize your Android device.
STEP 2: Now, take the USB cord and connect your Android Device to your Mac system.
STEP 3: Now, navigate to Settings > Applications > Development on your Android smartphone / device. And then, tap on the button labelled as USB Debugging.
STEP 4: Now, simply drag down the window labelled as Notifications. There, tap on USB connection and then click on Mount.
STEP 5: This will display No Name on your desktop. And you can simply start copying files to your Android device as you are done with connecting your Android device to Mac / synchronizing your Android device with Mac.
Once you are done with your work as you have successfully connected your Android to Mac OS, eject the disk from your Mac and also unmount the same from the Android device and remove the USB cable. This is the complete step by step procedure to synchronize your Android to Mac.