iOS 16 will reportedly drop support for iPhone 6S and first-gen iPhone SE | Macworld
iPhone User Guide – Apple Support (AU)
Apple Hub on Twitter: "These are the iOS 16 supported devices. iPhone 6s, iPhone 7, and iPhone SE (1st gen) are no longer supported. iOS 16 will be available later this year #
iOS 16 drops support for iPhone 6S, 7 and the first-gen SE | Engadget