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Another notable feature found on previous generations of Galaxy but evolved for the S4 include Group Play for music, photos and games.
This feature allows multiple people to view or listen to the same content in real-time by sharing it between handsets without the need for a mobile or Wi-Fi signal using Wi-Fi Direct connectivity.
Connecting up two phones to play music creates a stereo set up and this can be increased (if there are enough handsets in the room) up to creating a 5.0 surround sound set up. The image above shows a two speaker stereo setup.