Chosen Solution

Just as the tittle says. Can the camera be installed on the iPhone 4 to “upgrade” the camera?

Just as we expected, the connector for the camera on the iPhone 4S is different than the connector on the iPhone 4 (CDMA and GSM). This means that you cannot “upgrade” your camera in your iPhone 4 (or downgrade your 4S if for some odd reason you can’t handle the 8 megapixel camera). The iPhone 4S connector has more pins. Even if it did fit, I don’t think it would work anyways. iPhone 4S: iPhone 4S Teardown iPhone 4 (CDMA and GSM Side-By-Side): iPhone 4 Verizon Teardown