If you’ve just bought a brand-new iPhone 15, you’re probably still in the honeymoon phase: staring at the thing and wondering how you got so lucky. But it’s time to get serious. You’re holding one of the world’s most versatile and advanced handheld devices, and you need to make the most of it. Of course, the first few jobs after taking a new iPhone out of the box are obvious: peel off the cellophane, turn it on, maybe charge
