Samsung J1 SM-J120F - Manual (Page 7)

Basics
7
• Do not cover the antenna area with your hands or other objects. This may cause
connectivity problems or drain the battery.
• Using a Samsung-approved screen protector is recommended. Unapproved screen
protectors may cause the sensors to malfunction.
• Do not allow water to contact the touchscreen. The touchscreen may malfunction
in humid conditions or when exposed to water.
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.
Back • Tap to return to the previous screen.
Volume • Press to adjust the device volume.