The Tab S4 features a gorgeous display, pogo pins for an external keyboard, and even a stylus — the S Pen — that comes included with the tablet.
If you wish to adjust the length of time the screen is active, go to Settings > Display > Screen Timeout.
Select the radio box for 15 or 30 seconds.
To turn this feature off, go to Settings > Advanced Features and toggle off the Smart Stay slider.
To turn this feature on, go to Settings > Device Maintenance and tap the Battery icon, then select Save Power.
DeX provides a PC-like experience on the S4 when using the keyboard or attaching the tablet to a monitor via an HDMI adapter.