> on windows systems this happens through network holes or application flaws when seeing specific content.
that's certainly one vector, but people installing malware on windows (and elsewhere) is pretty common. spyware, adware, etc. come with the latest codec that has to be installed to see the cool video of the day, etc.
less than clueful users (and even some clueful ones) voluntarily install dubious stuff on their computers all the time, why do we expect mobile phones to be any different?