The AndroidGalaxy.net ball first stared rolling with a ‘How to Unlock’ video.
My first video uploaded to Youtube in August of 2010 showed how you could download a simple script from XDA to your computer, connect your phone, run the script and it would display a network unlock key. You could use that code to SIM-unlock your phone and use it with other cellphone providers.
That script does not work with Froyo however. Since most Samsung Galaxy S phones around the world now have Froyo (either out of the box or after an official update) I have made a video showing how to sim-unlock a Galaxy S phone that already has stock Android 2.2.
There are 2 apps I found in the market when I searched for Samsung Galaxy S Unlock. I was able to successfully unlock using one of them: Galaxy_S Unlock by Helroz. This app offers 2 methods. The first method is now outdated, as it works similar to the Eclair scripts. The second method replaces a file in a folder called EFS. This is a protected folder however, so in order to run the app, you require root.
Here’s the video: