Default [Q] Nokia X AT&T Settings?

Hey there,
I have a Nokia X that I can get connected up on AT&T to make calls and get txts but so far I have been unable to get any data or MMS working. I found how to add the APN settings, and then I found a couple of sources for the right APN settings for AT&T and so I put them in, but no matter what I enter I can't get any kind of 3g or other cellular data connection working. Wifi works fine but I need the MMS and mobile data

Did anyone else manage to make a Nokia X, XL etc work?

Thanks a lot