iPhone 18 Pro Max vs iPhone 15 Pro Max: three-year upgrade, compared

After three years, iPhone 15 Pro Max owners are likely to consider upgrading to the newest version. Here's how the iPhone 18 Pro Max fares against its 2023 counterpart. iPhone 18 Pro Max [left] vs iPhone 15 Pro Max [right] The iPhone 18 Pro Max is Apple's latest premium model of smartphone, if you ignore the iPhone Duo .