Why are my iPhone 12 and wife's iPhone 8 on different iOS versions?
My iPhone 12 is on OS 18 but my wife’s iPhone 8 is on OS 16.
Why aren’t they both on the latest release?
[Re-Titled By Moderator]
iPhone 12, iOS 18
Question marked as
Because an iPhone 8 has older technology in it, and is not capable of running with the newer operating systems which are more demanding of CPU speed and the amount of memory.
• If you have an iPhone 8 or X, you can update to 16.7.10
• If you have an iPhone SE (2nd generation or later), or XR through 16, you can update to 18.3.2