How long ago was this, and what iPhone model and iOS version were you using? The instructions they give are exactly the ones that I need to be able to execute

How long ago was this, and what iPhone model and iOS version were you using? The instructions they give are exactly the ones that I need to be able to execute on my "unlocked" phone, but the menu they reference is being suppressed by AT&T's carrier profile. I don't see how it is possible that these instructions could work for anybody that was using Red Pocket on an iPhone that wasn't jailbroken and that didn't have a tweak installed that reveals that Cellular/Mobile Data Network settings menu.