So when you joined a community up to now and trusted its certificated whereas at it, and saved it in your iPhone/iPad.
A while later, if both 1. It’s the identical community however their earlier certificates has expired they usually’re now utilizing a brand new one or 2. Your system finds one other community with the identical SSID, which doesn’t have the identical certificates (has no certificates or has a distinct certificates)
Will your iPhone/iPad warn you or will it quietly be a part of with out asking you about something?