Email to support not working in MB App → No email app is set up on the phone.
iMessage not working → Enable Allow Chats in the Restrictions tab.
FaceTime not working → Enable Allow Video Conferencing in Restrictions.
Apple services not working → Check Restrictions > Services.
Apple Music Radio requires Radio Service enabled.
Explicit content requires the toggle to be turned on.
CarPlay not working → Siri must be enabled in Restrictions.
Hotspot issues:
DNS categories and URL lists may interfere with Hotspot functionality on iPhone/iPad (cellular versions).
Try disabling Settings > Personal Hotspot > Maximize Compatibility.
Ensure the Special Config "Google Site Block Images Tab" is disabled (this may help but is not always effective).