I'm using the iPhone X with the latest iOS (11.x). I have noticed this problem, though, on my iPhone 6 Plus also with iOS 11. For some reason, I can't connect to public Wi-Fis. Some Starbucks don't use Google Starbucks (they say Starbucks Wi-fi in the connection list) and I can't connect to those. Also, I had the same issue today at McDonald's. It would connect after I get the login screen (which took a while) and then immediately disconnect. I do use Phone Guardian VPN and I've tried disabling that but it's the same issue. I've kind of given up on public Wi-fis but I don't want to waste my data.
Any clues? Thanks.
Any clues? Thanks.