Samsung Galaxy A21 User Manual page 12

Basics
Hard keys
Key
Side key
Volume key
Soft buttons
Recents button
When you turn on the screen, the soft buttons will appear at the bottom of the screen. The
soft buttons are set to the Recents button, Home button, and Back button by default. Refer to
Navigation bar (soft buttons)
Function
• Press and hold to turn the device on or off.
• Press to turn on or lock the screen.
• Press twice or press and hold to launch the app or feature you set.
• Press to adjust the device volume.
for more information.
Volume key
Side key (Power)
12
Back button
Home button