Can you use the second screen when screen is off?
Function
You can use the second screen when main screen is on or off.
When the main display is on it shows favorite apps, contacts, calendar items and music.
In the browser, tabs will be shown in the second screen. In the video app, zoom can be
controlled in the second screen. New notifications will display in the second screen
minimizing main-screen interference. Available options: Signature, App shortcuts, Recent
apps, Music player, Quick contacts, and Upcoming plans
When the main display is off see the time, date and phone status or signature. Swipe to
the left to see Quick Tools (In Quick Tools; Wi-Fi, Sound/Vibration, Flashlight, and
Camera). Quick tool options cannot be changed.