Poke poke, flick flick, tweeeeeze!
With all of the easily-removed components out of the way, we get to work peeling up the remaining, slightly-adhered parts filling the Galaxy S4's display assembly.
First out is a multi-purpose component that connects the earpiece speaker, IR blaster, and a sensor array hosting the ambient light sensor and a second IR sensor.
The placement of the two IR sensors on either side of the earpiece speaker explains how Samsung's new Air View/Air Gesture feature operates. By comparing IR light reflected from your hand into each of the sensors, the phone can track sideways motion as you gesture without touching the screen.
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