iPhone 16 Pro Max offers ‘best battery life on iPhone ever’ — how much better is it?
Via regulatory listings we found that the iPhone 15 and iPhone 15 Plus have 3,349 mAh and 4,383 mAh batteries, respectively. In our tests we found the Plus model performed much better than the standard iPhone 15, giving us a battery life of 14 hours and 14 minutes compared to 11 hours and 5 minutes.