Iphone is connected to WiFi with internet but connection says No Internet Connection
iPhone XR iOS 16.2 Asus RT-AC86U Router. I have reset network settings, applied the latest firmware to the router, and rebooted everything but the phone has been for many months now saying that my wifi connection has no internet connection. This is despite the fact that it does have a fast connection. I have put it in airplane mode to confirm that it is only using wifi but the issue persists.
"No Internet Connection
If this is your Wi-Fi network, try restarting the router, or contact your ISP."
I also have a work Galaxy phone that is connected to the same wifi network and it does not complain about no internet connection. Either does any other device on my network.
Has anyone else got this issue or found out why it says this and how to fix it?
iPhone XR, iOS 16