> Can you talk a bit more about how iMessage is fundamentally diferent than SMS on the functionality level It's different in the same way every messaging app i

> Can you talk a bit more about how iMessage is fundamentally diferent than SMS on the functionality level It's different in the same way every messaging app is different from SMS: * Group chats, with custom group names and icons * High quality images/videos * Reactions * Stickers * Rich link previews * Threads * etc. etc. > why iMessage is able to be the skeleton key into your iPhone I don't think a lot (any?) of the vulnerabilities are unique to iMessage. It's more about the fact that SMS/iMessage is a means for someone to send you data that's then parsed/decoded immediately by the system.