To unlock an T-Mobile G2X you will need an unlock code. An T-Mobile G2X unlocked should work with all GSM networks once you have unlocked it using our free instructions provided below.
Most SIM based cell phones by default. If your T-Mobile G2X has a SIM lock on it, then it will prevent you from using the mobile phone with any other carriers. We introduce you here that the following method will VOID your warranty but will easily and fast unlock the T-Mobile G2X using an unlocking code.
If you need help with the above steps or have some insight on unlocking the T-mobile G2X, please feel free to leave a comment.
How To Get An Unlock Code
Getting a free code from your carrier doesn't always work. Alternatively, I recommend this website when trying to find an unlock code. If they do not support your cell phone then you can also try this online vendor that supports tons of specific phone models.