FaceTime calling
when I make a Group FaceTime call I see their faces but I’m a blank square? How do I fix this?
iPhone XR
You don't need to factory reset.
Can you take a selfie with your camera? When you initiated this call were you on your home WiFi or someplace else?
Try a forced restart: Press the volume up button and release it then immediately press the volume down button and release it, then hold the side button until you see the Apple logo and release the button.