Glenn FleishmanSenior Contributor, Macworld

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Glenn Fleishman is the author of dozens of books, including his newly released London Kerning, a book about the past and present of type and printing history in London. He's a senior contributor to Macworld, where he writes Mac 911 columns, and contributes regularly to many periodicals.

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How to upgrade a drive with High Sierra and APFS

What if you want to swap in a higher-capacity drive in the new version of macOS?

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What are offloaded apps in iOS 11 and how do they work?

Apple’s new option is not well explained, but it can save space on your iPhone.

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The difference between 'Downloaded' and 'Install' on iOS updates

If the download gets interrupted, iOS won't install the update. Fortunately, the fix is easy.

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Why you should not rely on iCloud Photo Library as your only media backup

While Apple has been reliable, putting all your pictures of eggs into a cloud basket is unwise.

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Is there any way to shorten the available Wi-Fi list in macOS and iOS? Unfortunately, no

The list of networks in your vicinity cannot be suppressed in iOS or macOS. There is one possible way to shorten the list while in your own home, but it's not a simple solution you can do on your Mac, iPhone, or iPad.

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What to do when breaking up a shared Apple ID account

Sometimes people share an Apple ID out of convenience. But it can cause problems when you don't want to share that ID anymore.

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How to avoid password-prompted phishing scams in iOS

An open-source development project founder shows proofs of concept of how malicious parties can make you think they’re Apple.

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iOS 11: How to take great photos with the Camera app

Beyond the expanded Portrait mode in the iPhone 8 Plus, taking enhanced pictures requires more preparation on all recent iPhones.

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Why Photos for macOS says an image is an unsupported image format

You might be seeing a message if you’ve updated iOS to version 11 and not macOS to High Sierra.

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iTunes 12.7: Can you really delete iOS apps stored by iTunes?

Deleting those iOS apps seems like a scary thing to do. But if you are using iTunes 12.7, you can do it. Really.

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What to do when ransomware strikes your Mac

Scammers are using purloined iCloud credentials to lock Macs with a message demanding payment.

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Safari bookmark sync out of whack? Here’s the solution

If your bookmarks are always disappearing, the fix is easy to implement.

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How to markup and send a photo in iOS Messages

The iOS 11 Messages app requires a variety of tapping to get to the right place to send an annotated photo.

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How to empty your Safari Reading List

If you want to clear that list, you have to navigate deeply in iOS, or use a few simple clicks in macOS.