We have featured a number of ways to try an enable your 3Gs iPhones here on Geeky Gadgets from HDR iPhone Apps and HDR Jailbreak techniques.
However 9 to 5 Mac have discovered that if you are using a iPhone 3GS Apple may already have HDR capabilities ready for in their next update for you. The evidence also looks like Apple had planned HDR support for the 3GS from the beginning.9to5Mac has discovered that there are it fact two HDR icons within the SDK. (Picture above). Labeled with one for an iPhone 4's Retina Display and another for an iPhone without a Retina Display.
How do we know the other icon is not for the Retina Display? Apple has a very simple labeling process which places an “@2x” on image titles for the Retina Display and places nothing of that sort next to “iphone” on non-retina iPhones.Unfortunately the early 3G model of the iPhone does not have the required hardware to capture HDR photos unlike the 3GS.
There have been on indications by Apple when or if this feature will be released, but it could land on your iPhone 3Gs in the next update. Fingers crossed.Via 9to5Mac