I saw a question about Android's "Stagefright" vulnerability, and I got to thinking: other OS'es pre-process MMS messages to make it easier to view. iOS does it and shows a preview. Even BREW OS (the OS that comes with a basic flip/slider phone) has an option to auto-download an MMS.
If the vulnerability operates by exploiting a flaw in a 3GPP video's metadata, then wouldn't iOS and many other mobile OS's be susceptible to this vulnerability? Or is it just Android's "Hangouts" app?