This prototype iPhone board seems roughly contemporaneous with the black design prototypes (linked); only a select few would have been disclosed on the actual design, so those working on the OS UI would have been on a board like this https://t.co/xJf2VrknxA https://t.co/Zqzz0xKIu3

— Steve Troughton-Smith (@stroughtonsmith) March 19, 2019

What a trip down Memory Lane to see our old team’s M68 work - after 13 years! An exclusive look at an original iPhone prototype https://t.co/qkRPYa2MBs

— Tony Fadell (@tfadell) March 19, 2019

EXCLUSIVE: This is Apple's original iPhone prototype hardware. It looks like a PC motherboard. It's a secret developer board that was used to build and test the first iPhone. This is the first time it has been pictured publicly. All the details right here: https://t.co/tQh3unPnj6 pic.twitter.com/gz59Cy0TcW

— Tom Warren (@tomwarren) March 19, 2019

Prototype Development Board of Original iPhone Surfaces in Never-Before-Seen Photos https://t.co/rUR0tg89ny pic.twitter.com/HUgwOSHq3n

— Apple Streem (@applestreem) March 19, 2019

Prototype circuit board shows iPhone’s simple origins https://t.co/2y0GlB0gCE by @cultofmac pic.twitter.com/UBpowN82KV

— Cult of Mac (@cultofmac) March 19, 2019

EXCLUSIVE: This is Apple's original iPhone prototype hardware. It looks like a PC motherboard. It's a secret developer board that was used to build and test the first iPhone. This is the first time it has been pictured publicly. All the details right here: https://t.co/tQh3unPnj6 pic.twitter.com/gz59Cy0TcW

— Tom Warren (@tomwarren) March 19, 2019

This is so cool. It’s so easy to forget Apple shoved an entire computer into a phone, but then you look at these early iPhone prototypes. https://t.co/zb4LGOuWBX

— nilay patel (@reckless) March 19, 2019

An exclusive look at an original iPhone prototype https://t.co/DztXM5l255 pic.twitter.com/nfHNz8FgQl

— The Verge (@verge) March 19, 2019

An exclusive look at an original iPhone prototype https://t.co/u6ooSUtQd4 pic.twitter.com/UAPEBf3QHC

— Dimitri Androutsos (@EngProfD) March 19, 2019

What a trip down Memory Lane to see our old team’s M68 work - after 13 years! An exclusive look at an original iPhone prototype https://t.co/qkRPYa2MBs

— Tony Fadell (@tfadell) March 19, 2019

Wow - check out this first-time-in-public sneak peek at the original prototype for iPhone! https://t.co/cplkfGhvCd pic.twitter.com/vvPQRU9jyV

— IT History Society (@ithistoryorg) March 19, 2019

Like any piece of hardware, the first iPhone (2007) had a prototype. Meet Apple's 'M68', a big red circuit board with early iPhone functionality laid out in all its glory. Great feature on @Verge: https://t.co/bbfNHgl5DM

— ASML (@ASMLcompany) March 19, 2019

ICYMI - Prototype circuit board shows iPhone’s simple origins https://t.co/2y0GlB0gCE by @cultofmac

— Cult of Mac (@cultofmac) March 20, 2019

ICYMI: Prototype circuit board shows iPhone’s simple origins https://t.co/2y0GlB0gCE by @cultofmac pic.twitter.com/QmKRuwDWDQ

— Cult of Mac (@cultofmac) March 19, 2019

자 이걸 저안에 모두 우겨넣어요.https://t.co/wLyBDYDJ2I

— Don't Panic. (@techdildo) March 20, 2019

The first iPhone prototype: an exclusive look at Apple’s red M68 via /r/TheAmpHour https://t.co/cZPbM3hlzD

— The Amp Hour Podcast (@TheAmpHour) March 19, 2019

This story about the iPhone is a great metaphor for testing. Actually, not a metaphor – it's a literal testbed. ? thing is that the GUI is only occasionally used/needed. But what's absolutely needed is a clear test integration point for every feature. https://t.co/w6QBgypxyG

— Jason Huggins ? (@hugs) March 19, 2019

An exclusive look at an original iPhone prototype https://t.co/DztXM5l255 pic.twitter.com/CSxeLyRsYp

— The Verge (@verge) March 20, 2019

The first iPhone prototype: an exclusive look at Apple’s red M68 https://t.co/diUrbzrwpx

— Dries Buytaert (@Dries) March 20, 2019