View Media via External Display - Samsung Galaxy Tab® S 10.5
To view your tablet's screen on an external display (e.g., HDTV), see this info.
An AllShare Cast dongle and HDMI cable adapter accessory are required to view your tablet's screen via an external display and can be purchased from any Verizon Wireless retail store or at the online store.
Connect the AllShare Cast dongle to the HDMI device using an HDMI cable adapter.
From a Home screen, tap the Apps icon (located in the lower-right).
From the Wireless and networks section, tap More networks.
From the Media share section, tap Screen Mirroring.
Ensure the Screen Mirroring switch (located in the upper-right) is turned on .
From the "Available devices" section, tap the device.
If necessary, tap Scan (located at the top).