AppRadio is a cool implementation with flawed execution out of the box. It needs some customization to bring a lot of value out of it. Apple’s devices work with AppRadio but Android phones allow you full touch access to the beautiful 7 inch display of AppRadio 3 head-units. Apple’s CarPlay requires either a newer car manufactured 2014 and over or purchasing a head unit. AppRadio 3 is a cheaper and better alternative!
Here is what you have to start with 
Root LG G3 and install Super SU 
ARUnchained (get the latest beta)
Here are Product …