The $799 iPhone 17 comes with features previously exclusive to the Pros, without raising the price; the iPhone 17 Pros, once again, have the best and most varied camera system of the bunch; and the iPhone Air is just cool. As such, many of us are absolutely obsessed with battery life and battery health. It crushes all other iPhone 17 models, especially the iPhone Air. The iPhone 17 Pro has the same battery life as the iPhone 16 Pro Max, and the whole comparison clearly shows how large the iPhone 17 Pro Max's battery is. Things to consider before buying an iPhone for battery lifeIf you're only buying your new iPhone based on battery life, you have no other choice than the 17 Pro Max.