Apple has finally updated Sidecar to allow you to extend your Mac screen onto an iPad when it's in portrait, not just landscape. For now, though, it's fiddly, but here's how to do it. The iPad needs ...

Need an extra monitor but don't want to buy one? Your phone or tablet is already the perfect second screen—you just need the right app to make the most out of it. GlideX is a cross-device utility that ...

Scrolling and streaming suck plenty of power on today's Android phones. Here's how to squeeze the most juice out of your battery, including a new option to monitor battery-hungry apps.