The cropping shows still your minimalistic approach of a picture or is it not cropped? I guess he is staring at his mobile. Its a strong composition well executed. Perhaps a new way to go. I like it.
It isn't quite so apparent to me what he's doing - It could be as s.c. says and he's texting - or - perhaps he's addressing a more urgent calling.
Haha, I didn't think of that one, George! I guess the palm of his hand is obvious to me since I took the picture, but not to others - and one reason why this is a B-shot :-) The pretzels blocking his hand, the aluminum foil blocking the pretzels.
Then the could suggest he is thinking about "yes or no: he is going to call the girl whose number he wrote earlier on his palm... :-)