!! I bought a galaxy tab from T-mobile last year. Wanted to switch sevice to att. I got the unlock code from t-mobile so i would be able to switch carriers. Now that the tab is unlocked and the new sim card is activated through att I cannot access the internet at all without using wi-fi. I bought a data plan from att and they aswell as samsung did trouble shooting yesterday and it still won't connect. Does anyone have any suggestions on how to get the internet working? HELP!!!!