Scott I fixed this one on my end. I think I misread this configuration guide: CWA - Central Web Authentication with Cisco ISE - Cisco Meraki Documentation   I kept the walled garden enabled but only included the IP addresses for my ISE PSN's (and I included their FQDN too). As soon as I removed the following entries, iOS devices worked just as well as Windows, Android and macOS. My mistake.    So I removed the following items:   17.0.0.0/8 captive.apple.com *.apple.com *.appleiphonecell.com *.ibook.info *.itools.info *.airport.us *.thinkdifferent.us clients3.google.com *.gstatic.co    Running ISE 3.2 Patch 4 iOS 17.2.1 Meraki MR 30.5 (various AP models) ... View more

Also experiencing this issue. Does Meraki have any solutions? Works fine with Windows, Android, macOS.  ... View more