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.
The device is pre-owned as there were already certain settings changed when you power up the phone for the first time. The screen on my device is also defective as it is blurry and significantly worse than my old iPhone 7 Plus.