The Galaxy S 4 comes packing a wide array of features. Some, like its flip-to-mute functionality, are minor but useful. Others, like the Smart Pause function that promises to interrupt playback when you look away from a playing video, are great ideas sullied by lackluster execution. And between those two extremes lies a dense field of additional functions. We tried to squeeze as much feature coverage as we could into our full review of the Galaxy S 4, but there’s only so much room in even the ...