Dell S2317HWI User Manual page 58

To stop projecting images to your monitor, swipe down the notification shade with two
fingers from the top of your screen and touch Disconnect.
Using Dell Wireless Monitor App on an Android™ Smartphone
Connecting to a Device
1 Turn on Wi-Fi and Bluetooth connection on your Android device.
NOTE: If the Bluetooth on your Android device is turned on before making the
connection, you will be able to control the casted screen with keyboard or mouse
connected to your monitor after connection is made.
2 Tap to activate the Dell Wireless Monitor app on your Android device.
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| Mirroring Your Device's Screen on the Monitor