“iOS 11 attempts to fix that problem by spotting WiFi networks that are proving troublesome and stopping phones automatically connecting to them,” Griffin writes. “If a phone learns that a certain network doesn’t tend to work, it will disable auto-join.”
“The potential problem with the feature is that it appears only the phone can decide if a network is bad or not,” Griffin writes. “That means that networks that are actually fine could be turned off, and vice versa.”
Read more in the full article here.
MacDailyNews Take: If you don’t want to connect automatically, turn off Auto-Join via Settings > Wi-Fi, then tap the “i” next to the network name. Make sure that Auto-Join is off.