Actually, don't laugh, I always think the knock-off iPhone are better than the iPhone and iPhone 3G, they have more features:
1. video recording
2. playback xvid, divx, rm
3. TV antenna to watch TV (it works, I've seen it)
4. front and rear camera
5. Chinese handwriting input
6. BT w/ A2DP
7. Some even have dual-sim slots
+ other regular address book, calendar, music and etc, all features in a phone for less than US$100