This could be the back of Apple's upcoming iPhone 5. Source: MacPost.net

The iPhone 5 may not look all that different from its predecessor, the iPhone 4.

What is said to be a photo of an iPhone 5’s back cover has emerged, and it features a model number widely believed to be associated with the next generation Apple smartphone.

The image, first published by MacPost, shows a white iPhone back styled much like the iPhone 4. It bears internal model number “N94,” which according to previous reports is a model that supports T-Mobile’s 3G services and is not currently used by Apple. The cover also is labeled “EVT2;” the letters mean “engineering verification testing.”

The photo follows images of a supposed iPhone 5 that leaked in January, which show a device that looks remarkably like the iPhone 4. But many expect the new iPhone to have a slightly different look. A larger display, curved glass and a flat metal back have been rumored, and a number of iPhone 5 case mockups seem to verify. Inside, the iPhone 5 is supposed to sport an A5 processor like the iPad 2, and a beefed-up 8-megapixel camera.

Competing designs and a cryptic statement from new CEO Tim Cook) have some saying we’ll see two new iPhones later this year: An iPhone 5 and a more affordable iPhone 4S. We don’t think we’ll see two models.

So what about that “N94? label? The AT&T iPhone 4 is labeled N90, while Verizon’s is labeled N92. BGR first noticed the N94 labeling in leaked photos that appeared in April. It’s obviously different than the two current models.

Based on the images we’ve seen so far, the N94 reportedly will include a different antenna design. It also will support T-Mobile’s network and feature an A5 processor — all features the iPhone 5 is expected to have.

For now, the iPhone 5 is expected to launch in October, possibly on Sprint’s network as well.

via MacRumors