If you were looking for an excuse to jailbreak your iPhone 4 using FaceTime over your carriers 3G network may just sway some of you to bite the bullet and go through the process. This can be done by installing a application located in Cydia called My3G [$3.99]. The app allows you to run any Wi-Fi only app over your carriers 3G network. While the FaceTime video calling quality suffers a bit compared to using Wi-Fi it still looks more than decent.
Update: If you're curious, 9to5Mac says a 5 min FaceTime call used almost 15 MB of data. Something to keep in mind if you have a data cap.
To those of you who have not tried to jailbreak, is using FaceTime over 3G worth giving it a shot? Sound off in the comments below and be sure to check out the video after the break!