After many long and painful delays, the iPhone 4 has been finally released in white colour. April 28th is the release date for the White iPhone 4 in the eastern hemisphere and Europe. However there is a slight difference with the iPhone 4's thickness. The white iPhone 4 is about 0.02mm thicker than the original iPhone 4. After holding the white iPhone 4 it immediately feels thicker than the original black iPhone 4. Still, the white iPhone 4 is much welcomed.