1/ Print to PDF from any app from iPhone and iPad — This trick relies upon a hidden feature of the Share Sheet. To print from any app, such as Safari, you begin by tapping the Share icon. Next, tap the Print icon from the bottom row of the Share Sheet. Depending on what you’ve enabled, you might have to scroll to the right to find it. Now, to access the PDF view, simply 3D Touch (or pinch together two fingers to zoom out, in no0n-3D Touch devices) in the preview area of the PDF.
With that done, you should be in a PDF view of your document, web page, or whatever. Your next step is to share it. Just tap the Share icon, and choose where you want to send your PDF. You can share it via Messages or Mail, or any other app that supports the Share Sheet extensions.
Another great option is iBooks, if you want to keep all of your PDFs together, but there’s often a Share Sheet icon there to do that directly. But you can even save the PDF file to your iCloud drive or Dropbox.
Saving the web pages you’ve visited to PDF is a great way to keep notes when you’re researching. Other options for where to save those PDF files include Evernote and even the built-in Notes app.
2/ Use the Remote app to control your iTunes library in macOS Sierra with your iDevice — If you have an iPhone, iPad or iPod Touch you can use the Apple Remote app — free from the Apple App Store — to control your Mac’s iTunes library from a distance.
First, pair the app with the iTunes library (or libraries) you want to control. Your device and your computer must be on the same wireless network.
If you have Remote 2.0 (or later) and Home Sharing is turned on, you can set Remote to pair automatically with any of the iTunes libraries on your Home Sharing network. You can also pair Remote directly with iTunes libraries that aren’t in your Home Sharing network. To pair the Remote with an iTunes library: Tap Remote on your device’s Home screen.
Tap Add an iTunes Library.
A 4-digit code appears.
Open iTunes on your computer and click the Remote button .
Type the 4-digit code in the iTunes window.
iTunes pairs the library on your computer with the Remote app on your device.
Pair Remote with your Home Sharing network.
To use Remote 2.0 (or later) with Home Sharing, every iTunes library you want to control must have Home Sharing turned on.
Tap Remote on your device’s Home screen.
Tap to turn Home Sharing on.
Type your Apple ID and password, and tap Done.
Tap the iTunes library or Apple TV you want to control.
3/ Use Home Sharing to import items from another iTunes library — You can use Home Sharing to import items from up to five iTunes libraries on other computers on your home network? You can (assuming you have an Apple ID).
When you use your Mac on your Home Sharing network to download an item from the iTunes Store, you can have the item download automatically to other computers on your Home Sharing network.
Turn on Home Sharing. Choose File > Home Sharing > Turn On Home Sharing.
Type in your Apple ID and password, and click Turn On Home Sharing.
If you don’t have an Apple ID, click “Don’t have an Apple ID?” and follow the onscreen instructions.
To import items from other libraries using Home Sharing, choose a computer on your Home Sharing network from the Library pop-up menu. The library loads and a list of categories appears.
Choose a category (Music, for example). In the Show menu at the bottom of the iTunes window, choose “Items not in my library.” Select the items you want to import, and click Import.
To automatically import new iTunes Stores purchases from another computer, choose a computer on your Home Sharing network from the Library pop-up menu. Choose a category (Music, for example).
Click Settings at the bottom of the window. In the window that appears, select “Automatically transfer new purchases from Library Name.” Select the types of items you want to import. Click OK.
To turn off Home Sharing, on each computer, choose File > Home Sharing > Turn Off Home Sharing. If a shared computer doesn’t appear when Home Sharing is on, turn Home Sharing off, and then turn it on again.
4/ Disable homescreen rotation on Apple’s Plus-series iPhones — By default, Apple’s iPhone 6 Plus, 6s Plus, and 7 Plus add an auto-rotating home screen to iOS, rearranging icons and the dock whenever a device is tilted sideways.
Aside from the Control Center orientation lock, here’s an indirect way of achieving the same result:
Within the Settings app, tap on Display & Brightness, then on “View” under the Display Zoomcategory towards the very bottom. Nominally this option just makes it easier to browse and tap on icons. As a consequence of using it, however, the home screen will no longer rotate.
To make the switch, tap on ‘Zoomed,’ then on ‘Set.’ Technically an iPhone has to reset to apply the change, but unlike a normal reboot this should only take several seconds.
That’s it — to reverse course, go back to the Display Zoom menu and select ‘Standard’ instead. The above method works in iOS 9 and 10.
Note that at least some apps, like Apple Messages, will continue to rotate their own interfaces even with Display Zoom on, and there may be no way of disabling this within an app’s settings. [From AppleInsider.]
5/ Using 3D Touch — If you have iPhone 6s or later, you may not be using 3D Touch, a more pressured press on the screen that releases a wealth of extra possibilities, for example when you are typing:
The first time you 3D Touch anywhere on the keyboard, you can start dragging the cursor around to place it in a specific spot. It’s a great way to get exact placement without fidgeting with your finger.
But, if you don’t lift your finger after that first 3D Touch and do it again, you’ll select the adjacent full word. 3D Touch one more time without lifting, and you’ll select the entire sentence surrounding the cursor. These extra actions take a little practice, but they’re darn handy once you get them down. [Here are a whole lot more handy 3D Touch features, from the Mac Observer.]