LG V20, ex-AT&T phone now on Mint. I can get out to the internet on every router other than the one we have at home (TP-Link A7 AC1750). Thought the problem was the router, replaced it (old router was the TP-Link C7 AC1750), and the no Internet available messages persist. I hadn't made any changes to the original router to trigger the initial loss of internet connectivity, and it worked fine for most of a year before it dropped internet connectivity on just this one LAN. Every other network I connect to works flawlessly, including at least one other TP-Link, and every other wifi enabled device in the house on the network works without issue.
I've tried both forgetting the WiFi network and setting it back up again, as well as resetting network settings under Settings > General > Backup and Reset > Reset Network Settings.
I've tried both forgetting the WiFi network and setting it back up again, as well as resetting network settings under Settings > General > Backup and Reset > Reset Network Settings.