I'm getting the same problem but I was getting Edge before I upgraded to 1.1.2
Here is my post
Hey guys
I'm running an unlocked Iphone which has been upgraded from 1.0.2 to 1.1.1 and then finally updated this week to 1.1.2
The phone is running on a T-mobile contract and has been pretty much problem free.... I've been running YouTube, The Web etc no probs
Now that I have done the update, the Edge logo has vanished, I have a white square in its place and on some screens its blue...
Now the web still works no problem, as does email... but YouTube now says I need an Edge connection or Wifi to work...
I have the correct settings in so what has changes from the update of 1.1.2 from 1.1.1?
Any help please