It's a piece of tech that connects your cellular phone to The top unit in your vehicle so that you will see a simplified version of the telephone screen to the infotainment Display screen. you are able to look at the https://www.caraudiocoho.com/products/mazda-3-car-radio-multimedia-player-1025screen-123screen-2014-2019-android-100-1920720-octa-core-6-128g-andriod-oem-system