In short, 3G Unrestrictor allows you to go around the iPhone's restrictions and limitations of being unable to use some apps such as Skype, FaceTime or SlingPlayer while on a mobile Internet connection (3G, EDGE, etc.). It tricks applications into believing your phone is in Wi-Fi when it is actually on 3G or EDGE.
While your iPhone is on 3G/EDGE/GPRS, you can:
- Make and receive FaceTime calls.
- Watch YouTube videos in high quality.
- Download apps, podcasts, music and TV shows larger than 20 MB from the iTunes Store.
- Watch TV with SlingPlayer, EyeTV, Sky Mobile TV, HavaPlayer or other TV apps.
- Make free calls using Skype or other VoIP software without additional fees.
3G Unrestrictor is $3.99 at the Cydia store.

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