I just updated to 6.0.1. I have an att phone. Im in Tokyo Japan right now, roaming on Softbank. I tried before to turn on facetime over celluar and still got the att f you pop up. Well i just installed 6.0.1 and now the swich for cellular data is in The ON position! I have no idea if this means i can now facetime over cell cause i have data off right now. Can anyone with att phone chack and see if their switch is now on? Would be awesome to get this feature with my unlmited plan.