If you’ve pre-ordered a pair of AirPods Max or fancy slimming the midriff with a subscription to Apple Fitness+, which includes unlimited access to pre-recorded fitness classes in a variety of disciplines to follow along at home, or using equipment in your local gym, you’ll need to update to iOS 14.3 or it won’t work. To update your iPhone, you’ll need to head to Settings > General > Software Update. Tapping on the latter will trigger your iPhone to start checking for the latest version of iOS. If you’re running the latest version of the operating system, you will be notified. If not, iOS 14.3 will appear with a button to Download and Install.