Size and weight1. Height: inches ( mm); Width: inches ( mm); Depth: inch ( mm); Weight: ounces ( grams). Apple today has released iOS 4 for iPhone 3GS, iPhone 3G, iPod touch 3G and iPod touch 2G to public as a free download via iTunes. This is. The iPhone 3GS is a smartphone that was designed and marketed by Apple Inc. It is the third generation iPhone, successor to the iPhone. This guide and tutorial will show you how to unlock your iPhone 3GS or iPhone 3G running iOS 4 using ultrasn0w. The iPhone 3G is a smartphone designed and marketed by Apple Inc.; it is the second . iOS 4, which was still compatible with the iPhone 3G, was released on June 21, An article in the Wall Street Journal's Digits column on July iOS is fully supported on iPhone 4 and iPhone 3GS. iPhone 3G is An iPad version of iOS 4 is also expected to be released by fall Do you have an iPhone 3G? Me, too. Have you updated it to iOS 4 yet? If the veins are popping out of your neck and your skin is turning green.