Intelligent Voice Call Startup and Screen Image Auto Rotation---You can start the APP by voice call on both Android and IOS devices even in black screen(you will need to unlock the screen if you have set it). By putting the device in horizontal state, the screen will auto-rotate to full screen. Adjustable Camera Body and Super Night Vision Performance---The phone reverse camera body angle can be adjusted for about 90 degrees, after adjusting to the right angle, you can fix the screws. 3-5M night vision distance with 0.1Lux minimum illumination. Guide Line Adjustable and Picture Video Function---For this WIFI wireless license plate camera, you can turn on or off its guide line. Moreover, You can even adjust the guide line to be wider, narrower, higher, lower by long pressing the guide line in the horizontal screen state of the device. You can also take pictures or videos with the camera, pictures and videos will be saved for convenient view and even sharing. Can be Used as Both Front and Rear View Camera---You can flip the Android backup camera image on its APP, thus you can install it in the front or rear according to your need. Also, we have included a butterfly bracket in the package if you don’t like the license plate frame. Compatible Smart Devices---Firstly, for any device, to use our 5G WIFI wireless rear view camera, it must support Double Band WIFI(IEEE 802.11 a/b/g/n/ac 2.4Ghz and 5Ghz) in WLAN function, you can check it in your device’s official website to confirm this(iPhone 4 or above compatible). Secondly, the device’s operation system must be Android 5 or above and IOS 7 or above. NOTE: For old or cheap Android devices, they usually don’t support Dual Band WIFI, please check twice. 5G WIFI Wireless Backup Camera---Compared to other 2.4G WIFi backup cameras, our 5G WIFI backup camera has improved much in performance: faster connection speed, more stable signal transmission, no image freeze. 1280*720p resolution, 170 degrees viewing angle, IP68 waterproof. Can be applied to vehicles which can provide 10-30V power supply like Campers, SUVs, RVs, Sedans, Minivans, pickups and so on.