The product works when used properly
The product works when used properly. The reason for missing 5 stars is because the website and product didn't come with documentation. I had to find a youtube video for a similar product in order to install. I did get an email with the manual after requesting it. 1. dip switch settings not clear what each switch does. 2. AUX volume not very loud and AMI cable need to be connected. 3. Android auto and mirroring worked 4. My phone allowed for both BT to OEM and MMI. Managed to keep existing radio/speakers/bluetooth working while upgrading to android auto.