I'm glad they kept working on it, and didn't jump right into launching it.

The first iPhone came out in 2007, and was a HUGE game changer in the cellphone industry. Chances are, the phone that's in your pocket was somewhat modeled after what Apple did just 10 years ago.

It almost wasn't, though. Remember the first iPods? The ones with the click wheel. Yeah, the first iPhones were almost modeled after that, just with a touchscreen setting.

From YouTube user Sonny Dickson, who posted the video:

Instead of the modern touch-driven interface we now call iOS, it featured an operating system dubbed “Acorn OS” (this was an internal code name, and it unclear if it would have kept that name if it had been released), which is derived from the acorn shown on boot. It presents an on-screen click wheel, which took up the bottom portion of the screen, and on the other half of the screen, a UI identical to the one found on the beloved iPod, with options such as “Dial”, “SMS”, “Music”, “Contacts” and “Recents”, however lacking a browser option. The interface is interacted with in the same way an iPod would be operated.

Check out this newly leaked prototype of the first iPhone software.

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