Fault type	Solution
No image on the rear camera	1. Please identify whether the rear camera is inserted into the AV/IN port of the 70mai in-car product correctly and press it to the bottom. 2. Please identify whether the screen with the current image is front-recorded for the main device. If so, switch to the rear-recorded screen manually in order to see the image from the rear camera. 3. If there is still no image while the above operations are correct, please contact the after-sales customer service.
The screen with rear image is blurry	1. Please identify whether the protective film has been removed from the rear camera. If not, please tear off the protective film and continue using it.