I might be missing something, but has there ever been any exploit (or string of simultaneous exploits) for iOS or android which meets all the criteria?
It must be through a text message or web page, it must be remote, reliable, silent, require no interaction, must be entirely comprised of 0-day exploits throughout the whole chain, must affect multiple architectures and all supported devices, and must bypass all security checks to allow full root access.
It must be through a text message or web page, it must be remote, reliable, silent, require no interaction, must be entirely comprised of 0-day exploits throughout the whole chain, must affect multiple architectures and all supported devices, and must bypass all security checks to allow full root access.