any ps3 usb dongle can jailbreak the PS3 with open source drivers, and apparently the ps3 dwongrade has been leaked and will be open sourced also
recently, someone enabled the ability to play on PSN with the jailbreak, everyone is assuming Sony will ban these people, so if you care about your account, don't do it (btw the PS3 tracks what you do even when offline)
and i have no idea about the iPhone, but it does work on a heck of a lot of devices