[ame]http://www.youtube.com/watch?v=XYeleCFhLOs[/ame]
If anyone is experiencing the no Facetime and No MMS bug after your Jailbreak on iPhone or iPhone 4. This is how to fix it, all you will have to do is open up Cydia, wait for it to load, and download the "Update Essentials" that it prompts you for. Really simple to do, after you install it, your features should be back. Enjoy the Jailbreak everyone.