Apple's iPhone 15 Pro is the least 5-star rated model since the iPhone 8 that was launched six years ago, according to an analysis of 695,000 customer reviews. What Happened: The iPhone 15 Pro has been rated five stars by only 72% of the buyers in the first month since its launch, according to an analysis of 695,000 reviews by PerfectRec. While having 72% 5-star reviews sounds like a high number, this is the lowest for any iPhone model since the iPhone 8 launched in 2017.