I'm not sure. They always said that 3G worked but I played with revision 2 for some time. I modified the apns-conf.xml in the 0530 and 0611 firmwares from hiapad (installed them) and managed to get it to recognise my carrier correctly from the rockchips network app. i.e it listed my network provider (three) in the APN list. It got a signal on the modem (top icon showed signal) so it would seem the driver was working/talking to 3G modem, however it could never dial out...would just time out after a while. The funny thing was that even though I modified the apns-conf.xml etc it would list chinatelecom in menu lock which made me think somehow that was hardcoded in the firmwares somewhere even though I could never find where. I then was told WCDMA was not supported in v2 apad, which I couldn't work out how because to me I would have thought the protocol used by the modem wouldn't matter, I would have thought you just needed a driver to talk to the 3G modem. I'm not that experienced in that area (re: modems) so I gave up getting it to work/just put it down to missing driver or other. I've been meaning to do some reading on how LINUX provided the 3G support so I could then work out how to fix the firmware but again I kinda gave up in the end. My knowledge of UNIX is very good but the dialup side of things I've not done much so couldn't work it out...yet. Any information to point me in the right direction is always appreciated. So you think it was just the way the wired in the USB ports on the apad v2?...or lack of..that was stopping the WCDMA from working?I would have thought if this was the case I would have been able to talk to the modem from android i.e see a signal from rockchips network manager, and also wouldn't have allowed the chinese users to connect with their modems to non WCDMA networks?