To calculate the overall star rating and percentage breakdown by star, we don’t 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.
I ordered 2. The first one didn't work so I returned it. The second one didn't work either. It was cheap and I didn't return it because that would mean I had to go to town and I chalked it up as a loss!