I strongly suspect that changing the auto-join setting is not disabled, but the profile is getting checked periodically and "updated" (either by the SIM applica

I strongly suspect that changing the auto-join setting is not disabled, but the profile is getting checked periodically and "updated" (either by the SIM application or some iOS service), overwriting your manual change. Seems it's a known issue for some months now: https://discussions.apple.com/thread/254228630 https://discussions.apple.com/thread/254228630 Quote: "I spoke to Apple support today and they helped me. First I had to reset Network settings, then at bottom of Wifi settings page, I had to make sure that ‘Ask to join networks’ is set at ‘Ask’, and ‘Auto-Join Hotspot’ is set at ‘Ask to join’"