Basics

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 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

Press to open the list of recent apps.

 

 

 

 

Press to turn on the screen while the screen is locked.

Home

Press to return to the Home screen.

 

Press and hold to launch Google.

 

 

 

 

Press to return to the previous screen.

Back

Press and hold to access additional options for the current

 

 

screen.

 

 

 

XCover

Press or press and hold to launch preset apps.

Press to take a photo in camera mode.

 

 

 

 

Volume

Press to adjust the device volume.

 

 

 

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Samsung SM-G390FZKAILO manual Keys, Recents