Apple Hub - According to iPhoneSoft, iOS 15 will be compatible with all iOS 14 compatible devices except for the iPhone 6s, iPhone 6s Plus and the 1st gen iPhone SE. #Apple #
iPhone SE 1 users rejoice! We get iOS 15 support! | MacRumors Forums
My Iphone SE First Gen with iOS 15. : r/iOSsetups
The beloved iPhone 6s and the original iPhone SE are outdated. IOS 15 updates are not planned for them
Does the 2016 iPhone SE Support iOS 16? - iOS 16 Compatibility