Captive Portal Login Not Automatically Appearing on iOS 18

Since updating my iPhone to iOS 18, I’ve been experiencing an issue with Wi-Fi networks that require login via a captive portal. The login page no longer appears automatically after connecting to these networks. Instead, my iPhone connects to the network but shows “No Internet Connection.”

To resolve this manually, I have to go to Settings > Wi-Fi, view the network information, copy the router’s IP address, and paste it into Safari. This brings up the login page, allowing me to proceed, but it’s not the default or expected behavior.

Steps I’ve Taken to Resolve the Issue:

1. Forgotten the affected networks and reconnected.

2. Restarted the iPhone multiple times.

3. Verified the network settings, including IP and router information.

4. Cleared Safari’s history and website data.

Despite these steps, the captive portal login page still does not appear automatically for new or previously known networks.

I would appreciate any guidance on resolving this issue or confirmation if this is a known bug in iOS 18. Thank you for your assistance