Journalists Wall Street Journal and The Verge drew attention to the unpleasant cant of new watches Apple Watch Series 3. Instead of connecting to the LTE network, they mated with unauthenticated Wi-Fi networks.
WSJ talked about three devices with this problem in two different people in different parts of the US, while The Verge was faced with the problem directly when writing a review. They sent a new watch, but they also had a similar problem.
Apple confirmed the existence of such a software error and promised to release a patch for it in the future software update. But most likely, up to the end consumer the clock will get problematic, because their sales will start on September 22. Not all, of course. Individual surveyors had no such problem with avoiding LTE networks for hours.