These days, most people would use a Bluetooth speaker to provide the audio for a party. However, Samsung has what it thinks is a better idea: turn your friends into speakers. Never mind that the Samsung Galaxy phones have mediocre speakers. The company's Group Play feature allows you to stream your music to your friends' phones, provided they are within Wi-Fi range. As they move around the room, they take the sound with them, no matter how poor the quality.
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