If you want to keep your devices connected to the latest updates for as long as possible, the latest macOS Sequoia and iPadOS 18 updates will throw you for a loop if you are using a particular Mac or iPad.

It makes sense that older Apple devices would not support Sequoia. Apple's recently announced "Apple Intelligence" AI feature only works with Apple's M-series chips like the M1 and the new M4 processors.

Nevertheless, the newly announced iPhone Mirroring feature is available on both Apple Macs with Apple silicon and Macs with Intel processors. This feature allows users to control their iPhones through the Mac screen.

Devices not on the compatibility list will still work, but will no longer receive patches or security updates from Apple. Also, as apps and programs are updated, older versions may no longer be supported.

Moving on to the iPad, Apple will end support for the 1st generation iPad Pro and the 2nd generation 12.9" iPad Pro. Support for the 6th generation iPad will also end.

Like the Mac, iPadOS 18 brings new AI capabilities to the operating system, requiring more power than older chips can handle.

Apple announced the operating system update at WWDC 2024. The update is currently available to Apple developers. Everyday users should see the update released sometime in September.