To calculate the overall star rating and percentage breakdown by star, we do not use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Some of the programming was not included in the unit as advertised, would not fix. Now after several months the unit has "bricked" completely. Buttons don't light up so at night you don't know what you're doing, car play/android auto not installed, random times GPS didn't work. Awful product and now I'm out the $100.00.