Apple's watchOS 27 cuts off everything older than the Series 10 — Series 9, Ultra 1, and SE 2 all dropped. A watch from 2023 is obsolete.
Meanwhile iOS 27 still runs on the iPhone 11, a phone from 2019.
I get that the new Siri AI needs newer silicon, but "your two-year-old watch is too old, your six-year-old phone is fine" is a tough pitch.








