Apple hasn't forgotten about some older iOS, iPadOS, and macOS versions
At the same time as updating its current operating systems, Apple has issued a few updates for older versions of iOS, iPadOS, ...
Macworld7d
iOS compatibility: Find out the latest version your iPhone can run
Unsure which version of iOS your iPhone can run? Here’s a quick guide ... This means that Apple has now ended support for the iPhones X, 8 and 8 Plus as it is no longer issuing security updates ...