I am always used to putting my iPhone on the left side of the track pad when i'm syncing. Today i got a Samsung Galaxy S3 and when it was syncing, EVERYTIME i put it on the left side of the trackpad, it would put the mac to sleep, exactly like what happens when you close the display. Is this because i have the NFC enabled? or is it something with the mac? 2012 cMBP 15"