Samsung Behold II SGH-t939: service disconnected/not registered to network issue

Hi, I am having a major issue with my samsung Behold II. A while back I racked up quite a bit on my phone bill with 3g and roaming charges, and wanted to make sure it never happened again. Well to do this I typed in the *#*#4643#*#* I believe it was. And went to disable network data in the phone info options. Well after this it has been this way. In the normal phone settings under info it says Service: (disconnected). and the signal shows searching. There are no bars it is just a red circle with an X. I have tried everything I could think of, master reset, manually typing in an apn (epc.T-Mobile.com) and still nothing. I am at a loss. Any ideas on how to get this back to a working phone???


p.s. sorry if this is a double post

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You don't have it in airplane mode or anything like that, right?

Thanks for the reply. No, the airplane mode is off. At first I thought it was something to do with the network lock option, so I unlocked the network. But that did not do anything.