Sorry for the confusion, it's like roni said. If the router has no connection to the internet the phone wont connect to the wireless router.
I use my phone as a remote control for xbmc. So if i loose connection to the internet for some reason on my router i cant even connect to my wireless. Same goes for using the phone with wifi OBD dongles.
Its like they designed the wifi on the phone to only be active as a source for the internet.