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Samsung Galaxy J4 - Basics; Device Key Functions

Samsung Galaxy J4
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Basics
12
•
When using the speakers, such as when playing media files or using speakerphone,
do not place the device close to your ears.
•
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:
If you attach metallic stickers on the antenna area of the device
If you attach a device cover made with metallic material to the device
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.
Keys
Key Function
Power
•
Press and hold to turn the device on or off.
•
Press to turn on or lock the screen.
Recents
•
Tap to open the list of recent apps.
Home
•
Press to turn on the screen while the screen is locked.
•
Press to return to the Home screen.
•
Press and hold to launch
Google Assistant
.
Back
•
Tap to return to the previous screen.
•
Tap and hold to access additional options for the current
screen.
Volume
•
Press to adjust the device volume.

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