Apple’s Photos app is remarkably good at identifying people in your snapshots and collecting all the pictures that contain a particular person into a group in its People view. At its top level, the People view shows a thumbnail photo for each person, picking one automatically from all the available photos. Needless to say, it doesn’t always pick the photo you want, so if you dislike what’s there, you can change it easily on the Mac. In Photos, click People in the sidebar and double-click the thumbnail of the person you want to change. If necessary, click Show More to see all their photos, then Control-click the desired photo and choose Make Key Photo from the contextual menu.
Wondering what happened to the numeric battery percentage indicator on the iPhone X? The notch takes up enough space at the top of the screen that there was room only for the battery icon, which can be hard to interpret. If you want to see precisely what percentage of your battery is left, swipe down slightly from the top-right corner of the screen. That gives you the full set of indicators, including battery percentage. You don’t have to keep swiping down enough to show Control Center, but if you do, all the indicators will be there too.
For navigation, every Web browser offers back and forward buttons, generally represented by arrows in the upper left of the toolbar. You can also navigate by choosing menu commands and typing keyboard shortcuts—did you know that Command-Left arrow and Command-Right arrow work too? But if you’re using a Mac with a trackpad, you can move back and forth between Web pages—in Safari, Chrome, and Firefox—with a two-fingered swipe left (for back) or right (for forward). If you prefer, you can switch to a three-fingered swipe in System Preferences > Trackpad > More Gestures. Or, if it’s difficult for you to keep exactly two or precisely three fingers on the trackpad, you can choose to swipe with two or three fingers.
Do you create reminders with Siri on the iPhone? Those reminders are automatically added to your default list, which you set in Settings > Reminders > Default List. That’s great generally—“Hey Siri, remind me to update watchOS tonight at 11 PM”—but less good when you want to maintain different shopping lists. For instance, create a list called “Grocery,” and then you can tell Siri, “Put chocolate-covered bacon on my Grocery list.” Want to get fancy? Make a list called “Hardware,” and then tell Siri, “Add birdseed to my Hardware list, and remind me when I arrive at Home Depot.” You may have to pick the correct Home Depot location from a list, but then you’ll receive an alert reminding you to buy birdseed when you pull into the parking lot. To look at any list via Siri, just say something like “Show my Grocery list.”