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How to setup extra USB camera
In order to be compatible different scenarios, users can choose the extra USB camera with R4X, because R4X’s lens can only rotate 90 degrees, which is not enough for some applications. Using extra USB camera can satisfy the other angles.
1.Before power on R4X, please insert the USB camera first. Because this type camera can not support hot-plugging;
2.Go to Phone Setting - Video Settings - Other Settings interface;
3.Chosing the Camera Priority as External;
4.Clicking Save to submit;
5.When users make a video call, the image from extra camera will be displayed in other call party.