The touchscreen turns off after being inactive for some time. Press the hold button to
make it active again.
You can set particular time which needs to pass before the screen gets deactivated. Go to
the apps list and select:
[Settings]
[Display]
[Sleep]
.
Blocking the screen
Briefly press the hold button to block the device. The screen will turn off.
Unblock the screen by quickly pressing the hold button again. You will see a screen like this
one:
