Samsung SM-J810F/DS, User Manual, Page: 12 / 166

Basics
12
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When using the speakers, such as when playing media files or using speakerphone,
do not place the device close to your ears.
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Be careful not to expose the camera lens to a strong light source, such as direct
sunlight. If the camera lens is exposed to a strong light source, such as direct
sunlight, the camera image sensor may be damaged. A damaged image sensor is
irreparable and will cause dots or spots in pictures.
•
If you use the device with its glass or acrylic body broken, there may be a risk of
injury. Use the device only after it has been repaired at a Samsung Service Centre.
•
Connectivity problems and battery drain may occur in the following situations:
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If you attach metallic stickers on the antenna area of the device
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If you attach a device cover made with metallic material to the device
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If you cover the device’s antenna area with your hands or other objects while
using certain features, such as calls or the mobile data connection
•
Using a Samsung-approved screen protector is recommended. Unapproved screen
protectors may cause the sensors to malfunction.
•
Do not cover the proximity/light sensor area with screen accessories, such as a
screen protector or stickers. Doing so may cause the sensor to malfunction.
•
Do not allow water to contact the touchscreen. The touchscreen may malfunction
in humid conditions or when exposed to water.
Hard keys
Volume key
Power key
Key Function
Power
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Press and hold to turn the device on or off.
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Press to turn on or lock the screen.
Volume
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Press to adjust the device volume.