Does the tango app work in iPhone 3G ?

[Che Castro]

In the reviews on the AppStore there saying that there using it on the iPhone 3G

But when I try to download the app on my old 3G firmware 4.1 is not letting me

 

[IBradMac]

Does the iPhone 3G have a front facing camera?

 

[Che Castro]

Does the iPhone 3G have a front facing camera?

Is suppose to work on the iPhone 3GS using the back camera