You can go to eBay!
yes they do they have the same design.
Probably not, they have different exterior shapes.
iPhone 3GS
iPhone 3gs
No as the iPhone models have different shaped housing, so they will not fit earlier protective cases.
NO, the iPhone 3GS and 4 are differently shaped.
the iphone 3gs replaced the iphone 3g.
Dose the iphone 3gs have a radio
If you mean,' Do iPhone 3GS's have Verizonservice?'No, not anymore, as of 17/10/2011 you can only get the iPhone 3GS on AT&T!
no why do you think its called trading in?
I prefer the iPhone 3GS. Primarily because it receives signal better and i find it's easier to hold but that's just me. Plus i like the variety of cases you can get for the 3GS which makes it much more personalised but im sure new cases for the iPhone 4 will come out soon enough!
You can unlock your iPhone 3Gs anywhere if you have internet:)