Apple has released the iOS 17.4 update for eligible iPhones, which introduces a bunch of new features, including new emojis, Apple Music, and podcast-related capabilities. While most prominent features, such as app sideloading, third-party payment gateway and setting third-party web browsers as the default, are limited to the European region, the update also adds a new battery-related feature to the iPhone 15 series, making it easy to monitor the battery health of an iPhone 15 or the iPhone 15 Pro (review).