In iOS 6, you can see the APN setting under cellular data. But I couldn't find any in iOS 7. Also tried to use iPhone configuration utility to set APN, but apparently it doesn't work under iOS 7 (I am sure the setting is right, because when it worked after I reverted back to iOS 6). Any suggestion? I am kind worried it will never worked out even iOS 7 reach to final stage. I do need my 3G connections on my iPad Mini (yeah, I know, I am using Petro Canada Unlimited Web Browsing 3G connection).