If your Mac is acting up and you suspect a hardware problem, there’s an easy first step that you can—and should—try before calling for tech support: Apple Diagnostics. (On Mac models released before June 2013, Apple instead included a similar set of diagnostics called Apple Hardware Test.) Apple Diagnostics is a set of hardware test […]

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Have you ever seen the dreaded “No Service” label at the top of your iPhone’s screen, even when you’re pretty sure there should be cellular reception? It’s not common, but the iPhone’s cellular radio can occasionally get confused. Luckily, you can easily fix the problem. Open Control Center (swipe down from the upper-right corner on […]

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Does it seem like that red badge on the Settings app indicating that there’s a new iOS 13 or iPadOS 13 update pops up at least once per week? You’re not imagining things—Apple has been frantically squashing bugs in its mobile operating systems since their release in mid-September. If you haven’t yet upgraded from iOS […]

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If you’re experiencing a sporadic problem with your Mac, the sort of thing that happens often enough to be annoying but not so frequently as to be reproducible, allow us to suggest one little-known troubleshooting tip. Malfunctioning USB devices—keyboards, mice, hubs, printers, etc.—can sometimes cause truly inscrutable problems ranging from startup issues to kernel panics. […]

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