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A close-up of the iPhone 3G, introduced a year after the original iPhone as an upgraded version of the instantly-popular smartphone. The external design differences between the original iPhone and the iPhone 3G were relatively modest. The 3G model had a slightly wider black frame around the screen, and the back of the 3G phone was offered in either black or white plastic, compared to the original iPhone, which used aluminum. Another difference was the 3G's headphone jack, which was no longer recessed.
Chicago Tribune photo by Michael Tercha
A close-up of the iPhone 3G, introduced a year after the original iPhone as an upgraded version of the instantly-popular smartphone. The external design differences between the original iPhone and the iPhone 3G were relatively modest. The 3G model had a slightly wider black frame around the screen, and the back of the 3G phone was offered in either black or white plastic, compared to the original iPhone, which used aluminum. Another difference was the 3G’s headphone jack, which was no longer recessed.
Chicago Tribune
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Getting your Trinity Audio player ready...

Computer giant Apple looks set next week to unveil its much-awaited new iPhone, which analysts say will have a bigger screen and work better with remote computing services. Here’s a look at the iPhone’s past iterations.