How to Enable Native FaceTime Over 3G on iOS 5

These are instructions on how to enable native FaceTime over 3G on iOS 5.

Step One
Jailbreak your device using these tutorials.

Step Two
Launch Cydia from your SpringBoard.

Step Three
Press to choose Sections from the tabs at the bottom of the screen.

 
Step Four
Select System from the list of Sections.

Step Five
Choose iFile from the list of Packages.

Step Six
Press the Install button at the top right of the screen. A free trial is available if you haven't already purchased this app.

Step Seven
Press the Confirm button to begin installation.

Step Eight
Press the large Return to Cydia button once installation has completed successfully.

Step Nine
Press the Home button to return to your SpringBoard then launch iFile    

Step Ten
Navigate to /System/Library/CoreServices/SpringBoard.app/.

Step Eleven
Press to select N90AP.plist from the list of files then choose Text Viewer from the popup menu.

  
Step Twelve
Press the Edit button at the top left of the screen.

  
Step Thirteen
Add the following:

  

inside the capabilities dict, then press the Save button:

Step Fourteen
You can now restart your iOS device and and use FaceTime over 3G. (Don't forget to boot tethered if you need to).