After Unlock my HTC Sensation no mobil network why?

[Leo-2011]

I just unlock my phone with code provided from t mobile and after I unlock my sensation there is no mobile network please help ASAP? What I need to do to turn mobil network back to ON position?
Pleaseeee Help me?

Thank you

 

[fasst27]

Have you entered your APN settings? It is located in the mobile network in the settings menu. When I put in a different SIM card I had to do exactly that.

 

[fasst27]

Check with your new carrier for the correct settings.