My Iphone3GS connection to the internet was fine until I unlocked it!The version now is 4.1..The wifi bars are shown but still wont connect. Under the wifi numbers,only ip address and subnet mask are present .DNS and the rest are blank! All other devices under this wifi connect to the internet, except this iphone Also It works perfectly under any other wifi connection.I have tried "forget" the network,reset network settings! It has been over 2 weeks and i still cant figure out why!Please help!