Next to the flashy redesign of the iPhone 17 Pro and the ultrathin, ultralight iPhone Air, the iPhone 17 may feel quite plain. It helps that the iPhone 17 has many of the features of its pricier siblings, from the brighter screen with ProMotion and Ceramic Shield 2 to the new square-shaped 18-MP selfie camera. No, you don't need to upgrade if you have an iPhone 16 or iPhone 15—maybe even an iPhone 13. Catching UpPhotograph: Julian ChokkattuBear with me for a second, because the most exciting upgrade for the iPhone 17 isn't going to sound very exciting: It’s a faster refresh rate. Apple limited the feature, dubbed “ProMotion,” to its Pro iPhones for the past four years, but it finally caught up with the rest of the market, adding a 120-Hz display for the iPhone 17.