When we tried to install the latest OS11 for our Apple Watch, it didn’t show up in the update. We thought maybe that was the reason, so we updated our iPhone to the latest OS18 and checked the Watch update again, but it still didn’t show up.
We had a bad feeling, so we looked into it and found out that watchOS11 is not compatible with Series 5!
Ah, it’s finally been removed from support. Before we knew it, Apple Watch was also Series 10 this year. Still, the Series 5 is still in use, although the battery is weak. We’ll think about renewal th watch when it can measure blood sugar levels.