Every time you tap a link to open a Web page in Safari on your iPhone or iPad, it automatically opens a new tab. That’s fine until you realize that you have oodles of old tabs open, making it difficult to find any particular tab. To close all your old tabs in one fell swoop, press and hold on the tab button, then tap Close All X Tabs in the popover that appears.
It’s maddening to want to read a serial number or other bit of fine print that you can barely see. But fret no longer—your iPhone or iPad makes a fabulous magnifying glass! Assuming Magnifier is enabled in Settings > General > Accessibility > Magnifier, you can bring it up by pressing the Home button (for Touch ID devices) or side button (for Face ID devices) three times quickly. If that’s too hard to remember, you can also add a Magnifier button to Control Center in Settings > Control Center > Customize Controls. The special camera viewfinder is zoomed automatically, but you can change the zoom level with the slider, tap the flash icon to turn on the LED light (if available on your device), enable a filter to change the color or contrast, or lock the focus by tapping the lock icon. You can also freeze the image by tapping the white shutter button, which is great for grabbing a picture of a tiny serial number on the back of some device (tap that button again to resume using Magnifier). To leave Magnifier, press the Home button or swipe up from the bottom of the screen.
When you’re viewing a message in Mail on an iPhone or iPad, you get five buttons: Flag, Move, Archive or Delete, Reply/Forward/Print, and New Message. But what determines whether that third button is Archive or Delete? iOS hides that option in Settings > Passwords & Accounts > YourEmailAccount—the details then vary by account type before you see the Move Discarded Messages Into options.
But what if you want to archive a message when you have Deleted Mailbox selected, or vice versa? Simply tap and hold on the Archive or Delete icon, and a popover appears, giving you both choices.
You know that Command-Shift-3 takes a screenshot of the entire screen and Command-Shift-4 lets you pick a window, menu, or arbitrary selection for your screenshot. And Mojave introduced Command-Shift-5 to give you an interface to screenshots and screen recordings. But how would you capture a screenshot of a long Web page that requires scrolling? Rather than stitching multiple screenshots together, try this trick in the Google Chrome Web browser. Control-click anywhere on a page you want to capture and choose Inspect. Press Command-Shift-P to open Chrome’s Developer Tools command menu. Type “capture” and then click “Capture full size screenshot” to download a screenshot of the page as a PNG file. (When you’re done, close the Developer Tools by clicking the X in the upper-right corner.)
Need to check something in another email message while composing a message in Mail on an iPhone? Many people don’t realize that you can swipe down on the top of the draft to dock it at the bottom of the screen, look something up in another message, and then expand the draft again by tapping it at the bottom of the screen.
The Caps Lock key on Mac keyboards often feels extraneous, since it’s easy enough to hold the Shift key while typing multiple capital letters for acronyms like HIPPA or when you want to shout GET OFF MY LAWN! But if you need to do that on an iPhone or iPad, it’s annoying to keep tapping the Shift key to switch to the uppercase keyboard for each letter. Luckily, Apple has baked a time-saving trick into its onscreen keyboard. Tap the Shift key twice in a row to lock it on, type the letters you need, and tap it again to unlock it. Notice that when Shift is locked on, a horizontal line appears beneath the arrow on the Shift key.
Siri on the Mac hasn’t been as useful as on iOS devices, but with macOS 10.14 Mojave, Apple enhanced the Mac version of Siri in a variety of ways. Apple says that Siri now knows about food, celebrities, and motorsports, but more interesting is how you can ask Siri to control your HomeKit devices (“Turn on the bedroom lights.”) and locate your iOS devices or AirPods via Find My iPhone (“Where is my iPhone?”).
In macOS 10.14 Mojave, Apple exposed a feature of Mail that was useful, but hard to find and use. For several versions of Mail, you’ve been able to select a message and choose Message > Move To Predicted Mailbox to file the email in the suggested mailbox. (If the Move To command is disabled, Mail hasn’t yet learned how to move messages like the selected one. Once it sees you move messages from your mother into your Family mailbox, for instance, it will suggest that destination in the future.) In Mojave’s Mail, there’s also now a Move To toolbar button. If it can predict where the message will go, just click it; if not, click and hold to bring up a menu of all your mailboxes.
Browser tabs. They breed like bunnies, and if you’re like us, you have oodles of tabs open on your Mac, iPhone, and iPad. But you may not know that Safari has a great tab-management feature that lets you access all the open tabs on all your devices. (Make sure to enable the Safari switch in System Preferences > iCloud on the Mac and in Settings > YourName > iCloud in iOS.) This tab overview is easiest to find on the iPad, where tapping the tab 
button displays local tabs as thumbnails at the top of the screen and lists tabs from other devices beneath. On the iPhone, scroll down to the bottom of the tab list to see them, and on the Mac, choose View > Show Tab Overview. Click or tap any tab to view it. To close an unnecessary tab, in iOS, swipe left and tap Close; in macOS, hover over the tab name and click the x button that appears.
It can be easy to become overwhelmed by iOS notifications, particularly if you have chatty friends or apps. In iOS 12, Apple corralled notifications by grouping them into stacks so you no longer see an endless screen of alerts. To expand a stack of notifications on either the Lock screen or in Notification Center (swipe down from the top of the screen), tap the stack. Once you’ve expanded a stack, you can tap Show Less to restack it, tap the X button to remove the entire stack, or tap any individual notification to open it. By default, iOS 12 groups notifications intelligently, which might entail separate stacks for different Messages conversations, for instance. If that’s still too much, you can go to Settings > Notifications > App Name > Notification Grouping and tap By App to collect every notification from the app into the same stack.
