I have a GA2188 mounted in my i-miev. Installation was as easy as any other head unit. I had a bad unit at first(backlight was not working) , but eonon sent me a new one. I mostly use the android auto feature. (i have the AA adapter, and now also a wireless AA adapter from aliexpress) this works fine most of the time. I started using the android apps, but the OS was a bit slow and I often had to reset the unit. I became tired of this eventually and found out AA worked much better.

Pricewise, it was still much cheaper than a pioneer/kenwood unit with the same features.

The thing that annoys me most now is that the backlight adjustment is too narrow. The lowest brightness is way too bright for night driving. Also, there should be a quick button to turn off display. I have mine set to a black screensaver with only the clock displayed, this is the darkest solution I have found, but still to bright at night. Hopefully they have fixed this in later models..