iOS 8 is finally here for your iPhone and your iPad. A shiny new operating system is fun, but you probably have some questions. Here are the answers you need. Should I upgrade to iOS 8? If your device can support it then yes! iOS 8 brings a whole bunch of new features like a health-tracking app, new camera features like timelapse photography, Wi-Fi calling, and the ability to send texts right from your Mac. It’s not a total visual reimagining like iOS 7, but it’s still a big step forward with a bunch of new features. If you’ve got an iPhone 4S, an iPad 2, or a first-gen iPad Mini though, you should consider staying behind. These are the oldest devices eligible to upgrade to iOS 8, and they could get sluggish. The iPhone 4s, for example, runs up to 50 percent slower at certain tasks, and the older iPads are unlikely to fair much better. It’s possible that will improve with further iOS 8 updates! But for now you probably want to wait.