Samsung Galaxy Note 4 User Manual page 14

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Back camera: Take pictures and record videos.
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Flash: Illuminate subjects in low-light environments
when taking a photo or recording video.
•
Heart Rate Sensor: When using the S Health
app, this sensor measures your heart rate via your
fingertip.
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Infrared transmitter: Controls external devices
using infrared light.
Getting Started
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Microphone: Records audio and detects voice
commands.
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S Pen: Holder for the S Pen stylus.
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Speaker: Plays music and other sounds.
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USB charger/Accessory port: Connect the
Charger/USB cable (included), and other optional
accessories (not included).
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