Chosen Solution
Can I replace 3Gs camera on the 3G? Update I saw lots of 3Gs logic board being sell online, can I replace it on 3G? Now I know camera need to replace, what other part do i need? would the housing fit? would antenna and other port fit? LCD?…etc
The answer is NO. The connector pins are completely different. Might as well put an original 3G replacement camera.
No if you look they have sightly different form factors, I have know idea if you could be successful fiddling around and trying to mod it, but normally it will not fit. If you need a camera for the 3G you can get it here.