Samsung Galaxy Note 4 - Page 21

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•Proximity/gesturesensor—DetectswhenyouplaceyourGalaxyNote4againstyourheadto
talk,whichcausesittoturnoffthescreensothatyoureardoesn’tinadvertentlyactivateany
onscreenitems.Thissensoralsoallowsyoutousegestures(inconjunctionwiththe
accelerometer).Gesturesarecoveredlaterinthechapter.
•Lightsensor—AdjuststhebrightnessofyourGalaxyNote4’sscreenbasedonthebrightnessof
theambientlight.
•Earpiece—Thepartyouholdagainstyourearwhileonacall.