Even the best smartphone speakers aren't loud enough to fill a large room all by themselves. But what if you could have all of your friends' phones act as speakers and turn themselves into a giant stereo? With the Galaxy S4's Group Play feature, all you need to do is tap phones and you can stream a song to every other handset in the room.
With the Galaxy S4, you and your buddies can share more than music, photos or videos. You can cooperate or compete in games such as "Asphalt 7" racing or "Gun Brothers" -- and those are just two of many titles that will support this feature. We're holding out for a mobile version of "World of Warcraft."