iOS 15.4, the latest version of Apple’s iPhone operating system, has been released and should soon be available to download ahead of the Friday release of Apple’s new third-generation iPhone SE and green iPhone 13. via Technology and News Today https://www.theverge.com/2022/3/14/22976606/ios-15-4-mask-compatible-face-id-emoji-tap-to-pay-airtags-stalking-update-release-date-features