A horrifying discovery: The white iPhone 4 may be ever so slightly thicker than the black iPhone 4.
One guy tells MacRumors it's enough of a fatty difference that the white iPhone 4 wouldn't fit into an Incase slider case designed for the iPhone 4. Another, who shot the above photo, declares that it "immediately felt thicker" when he picked one up.
To the iPhone 4 specs page! The iPhone 4's stated dimensions: 115.2mm x 58.6mm x 9.3mm. And the fine print to go with them: "Actual size and weight vary by configuration and manufacturing process."
And the white iPhone does, it seem, use a different manufacturing process than the black iPhone, given Phil Schiller's statements about it being "challenging" to manufacture:
It's not as simple as making something white. There's a lot more that goes into both the material science of it–how it holds up over time…but also in how it all works with the sensors.
He also mentioned it needs more UV protection from the sun. All of those reasons in aggregate could explain why, if the white iPhone 4 really is a hair thicker, it's got a little more junk in its trunk.