Apple finally released its white iPhone Thursday, and there are already reports of a little problem with it. A really little one. Reports surfaced Thursday on MacRumors that the white iPhone 4 is 0.2 mm thicker than the black iPhone 4.

Cue the panic.

Because Apple fans have waited so long for a white iPhone, the discrepancy become the proverbial mountain out of a molehill. And courtesy of Wired, it already has a name: Thicknessgate.

For most people, the minute change in thickness makes absolutely no difference, according to TiPB. The blog tested several cases and found they fit the new phone just as well as the old one.

But some users with the InCase sliding protector, which is designed to be very snug on the black iPhone 4, are reporting that the cases don’t fit the new, paler phones. It’s a small, but annoying problem — the InCase slider protector costs about $35.

Just picked up the white iPhone 4 and realized it doesn’t fit into my Incase slider case.Thu Apr 28 20:57:12 via Twitter for MacD.R.B.U.K

This isn’t the first time Apple has run into case problems over small changes to the iPhone 4’s design. In February, new Verizon iPhone owners found that slight differences in button position from the AT&T iPhone 4 made their cases useless as well.

No one’s quite sure why the new phone is a bit fatter than the black iPhone, though Apple exec Phil Schiller has said that the company had to make several design changes because of the new color.

Did you buy the white iPhone? Have you had problems with your case?

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