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 love Samsung mobiles,, I was very disappointed when I used my new s9 plus , and the batteries couldn't last long only 3hours of used.. the delivery service hang up on my calls and no one responded to my emails or calls till date ??