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 will launch its new iPhone 17 series in two months, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive.
If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming...
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps.
Unfortunately, this feature continues to roll out very slowly since it was announced in 2021, with only nine U.S. states, Puerto Rico,...
Since the iPhone X in 2017, all of Apple's highest-end iPhone models have featured either stainless steel or titanium frames, but it has now been rumored that this design decision will be coming to an end with the iPhone 17 Pro models later this year.
In a post on Chinese social media platform Weibo today, the account Instant Digital said that the iPhone 17 Pro models will have an aluminum...
Three out of four iPhone 17 models will feature more RAM than the equivalent iPhone 16 models, according to a new leak that aligns with previous rumors.
The all-new iPhone 17 Air, the iPhone 17 Pro, and the iPhone 17 Pro Max will each be equipped with 12GB of RAM, according to Fixed Focus Digital, an account with more than two million followers on Chinese social media platform Weibo. The...
Apple is expanding the ability to add an Apple Account Card to the Wallet app to more countries, according to backend Apple Pay changes.
With iOS 15.5, Apple updated the Wallet app to allow users to add an Apple Account Card, which displays the Apple credit balance associated with an Apple ID.
If you receive an Apple gift card, for example, it is added to an Apple Account that is also...
Apple does not plan to refresh any Macs with updated M5 chips in 2025, according to Bloomberg's Mark Gurman. Updated MacBook Air and MacBook Pro models are now planned for the first half of 2026.
Gurman previously said that Apple would debut the M5 MacBook Pro models in late 2025, but his newest report suggests that Apple is "considering" pushing them back to 2026. Apple is now said to be...
Apple is continuing to refine and update iOS 26, and beta three features smaller changes than we saw in beta 2, plus further tweaks to the Liquid Glass design. Apple is gearing up for the next phase of beta testing, and the company has promised that a public beta is set to come out in July.
Transparency
In some apps like Apple Music, Podcasts, and the App Store, Apple has toned down the...
If you pay for iCloud storage on your iPhone, did you know that Apple offers you five perks beyond the extra storage space, at no additional cost?
Here are the perks included with all iCloud+ plans:Private Relay keeps your Safari browsing history entirely private from network providers, websites, and even Apple.
Hide My Email generates unique, random email addresses whenever needed.
Hom...