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The A21 doesn't support that feature. Your only option would be to use a wireless screen share or casting device like Miracast or Chromecast. Those two require WiFi, but there are devices that do not require WiFi. I hope this helps.
Sorry, there was a problem. Please try again later.The USB-C to HDMI & USB 3.0 with Power Delivery is a Plug n Play device. For this device to function the galaxyA21 must support DisplayPort Alt Mode for video out and Power Delivery if you would like to charge your A21 via USB-C power-in port. Please refer to the manufacturer of your hardware for more information on your device. Thank you.
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