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 #
Some iOS 15 features require an iPhone XS or newer - 9to5Mac
These great iOS 15 features will make you want a new iPhone
Features in the iOS 15 update that you will only get on iPhone XS or later devices - iPhone Islam
iOS 15 Update Coming To These Devices: iOS 15 Update Full List – Trak.in – Indian Business of Tech, Mobile & Startups
Some new features of iOS 15 are not available on iPhones older than iPhone XS - GIGAZINE