New Video Pits iPhone Click Wheel Prototype Against Scott Forstall's Icon-Based iPhone Prototype
A couple days ago Sonny Dickson shared a look at one of two early prototypes for the original iPhone, the iPod Click Wheel-based OS that iPod "Godfather" Tony Fadell was working on. Tonight, Dickson has shared a video pitting Fadell's version against Scott Forstall's icon-based iPhone prototype, which went on to become the basis for iOS.
Fadell's prototype was referred to as P1 while Forstall's prototype was referred to as P2. The two projects reportedly
went head to head in 2005 when Steve Jobs pitted the two against each other. While the P1 used the click-wheel interface to navigate the OS, the P2 used a series of touch-based icons to move around the OS.
Both P1 and P2 run a prototype OS Apple codenamed "Acorn OS" internally, though Dickson notes that P1 runs faster because it uses a slimmed down version of Acorn OS. Each prototype also sports a unique logo that pops up after the Acorn OS logo while it boots up.
The P2 loads octopus whereas the P1 has the iPod classic logo. The P2 takes a significantly longer to load because it actually has a real OS, whereas the P1 takes much less time since the OS is slimmer. These P unit prototypes are so early in the development process that they rely on a custom process to be turned off, and can only be powered down during a certain step of the boot process.
The video, and accompanying photos, provide both a look at the choice Steve Jobs and Apple employees faced as they were developing the iPhone and iOS 10 years ago and how Apple explores ideas. As Dickson notes, "P devices" are the first step of any project at Apple. They're barely-functioning devices that allow the company to explore and test concepts, iterating on them until they're satisfied enough to push the project further.

More images of the P2 iPhone prototype are available on Sonny Dickson's website.
Popular Stories
Apple today introduced its first two physical products of 2026: a second-generation AirTag and the Black Unity Connection Braided Solo Loop for the Apple Watch.
Read our coverage of each announcement to learn more:Apple Unveils New AirTag With Longer Range, Louder Speaker, and More
Apple Introduces New Black Unity Apple Watch BandBoth the new AirTag and the Black Unity Connection Braided...
Alongside iOS 26.2.1, Apple today released an updated version of iOS 12 for devices that are still running that operating system update, eight years after the software was first released.
iOS 12.5.8 is available for the iPhone 5s and the iPhone 6, meaning Apple is continuing to support these devices for 13 and 12 years after launch, respectively. The iPhone 5s came out in September 2013,...
Update: Apple Creator Studio is now available.
Apple Creator Studio launches this Wednesday, January 28. The all-in-one subscription provides access to the Final Cut Pro, Logic Pro, Pixelmator Pro, Motion, Compressor, and MainStage apps, with U.S. pricing set at $12.99 per month or $129 per year.
A subscription to Apple Creator Studio also unlocks "intelligent features" and "premium...
Apple today confirmed to Reuters that it has acquired Q.ai, an Israeli startup that is working on artificial intelligence technology for audio.
Apple paid close to $2 billion for Q.ai, according to sources cited by the Financial Times. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone and audio brand Beats in 2014.
Q.ai has...
Apple today introduced the second-generation AirTag, with key features including longer range for tracking items and a louder speaker.
For those who are not familiar, the AirTag is a small accessory that you can attach to your backpack, keys, or other items. Then, you can track the location of those items in the Find My app on the iPhone, iPad, Mac, Apple Watch, and iCloud.com.
The new...