Note: Please read the details carefully before purchasing, this product cannot be returned if your device cannot be used COMPATIBLE DEVICES - 1. Your car must be an Aftermarket Android Head Unit(Without factory carplay) and can Install autokit.apk in the car. 2. Our USB carplay supports iPhone with IOS 9 and above, iPhone 5 or above mobiles, Android mobile phones and Android head unit version 4.4.2 and above. (Note: Some Android Head unit can't install APK. Please install APK before buying it. If you can't install it, please don't buy it.) VOICE CONTROL - It can work with Siri/ Maps/ Music/ Phone Call. Support voice commands to make phone calls, use Maps(Support Google Map, Waze and Mirrorlink), listen to your favourite songs using iTunes, Music, and access to messages..(Android phone users need to install the "Android Auto" app on their phones in advance.) NOTE: iPhone supports wireless connection to carplay, and Android phones only support connection Android auto function via cable. FRIENDLY NOTE - This USB carplay compatible with Android system head unit(4.4.2 or above), doesn't support non-Android system&All original factory car head unit, and Google Maps for IOS 12 used, If your iPhone is not IOS 12, please update the phone system then use it, All Android phone can use the Google Maps. INSTALLATIONS REQUIREMENTS - 1. Android head unit. 2. system version 4.4.2 or above. 3. can install APP of the product.