The iPhone 15 is officially here. As with previous new models of Apple’s mobile phone, it will have a slightly better camera, a slightly better screen, and a slew of other marginal improvements and options (for example, it now comes in pink). It also will come with a record-high price for an iPhone, at least for customers of the iPhone Pro Max. Similar to the iPhone 14, the new version includes a basic model (the iPhone 15), a basic model with a larger screen (the iPhone 15 Plus), a luxury model (the iPhone 15 Pro), and a luxury model with...