After the update, the watch does not respond to incoming calls.

It's a glitch with the latest version of the Connect app on Android. There are many posts about this already.

Yes, I saw that this is not a new issue, but right now a huge number of people have raised it because it has become critical. The watches cost a lot of money, and customers want a quick resolution, as there is still no universal solution.

5.16.1 is already in Play Store. I'm waiting for it to become available to me.

Perhaps a good reason to give users the option of opting-out of updates when they're pushed? Or at least postponing for a while?