Don't know about your X-star but mine will not connect unless the camera is left on.
Update. Seems my phone needs to be not plugged into the controller. I was able to start the motors with the camera off. Not much documentation on this.
Anyways its all good now if I want to fly without the camera
I use mine at night. I have christmas tree lights strung around it for lighting. Point the camera straight down when taking off it looks pretty cool.