Like some phones you dont have to and do you have to to for htc touchpro2 to?

I bought an unlocked T-Mobile HTC HD2 and when i got it the phone it self works… but i cannot connect to the internet unless i have wifi… what setting do i have to change …

I bought an unlocked T-Mobile HTC HD2 and when i got it the phone it self works… but i cannot connect to the internet unless i have wifi… what setting do i have to change …

I have had a 2-year contract with T-Mobile already. I have the family plan where I get to pay monthly five cellular phones. How much would the HTC HD2 cost if I have made a …

Out of
1. mytouch 4g
2.galaxy s 4g
3. sidekick 4g
4. samsung vibrant
5. cliq 2
6. tmobile g2 w/google
yeah, idk wat the good phones r, but i could pick these out.