Just yesterday we introduced you to the photographs of the very first iPad prototype, dating from the beginning of this century. Of course, it looks quite bulky compared to the current model. It should also be borne in mind that Apple designer Johnny Ive and his team created hundreds of prototypes in secret laboratories.
therefore, these layouts are just some of the rigorously sampled images.
Bryan Bishop, in an interview with Verge, specifically describes a prototype called the N90:
It was believed that the N90 is the codename for the iPhone 4, although these are completely different devices, the N90 had a much smaller screen, but still it looked like the fourth generation iPhone, because was thin and its body was also made of metal and glass.
Back in early 2011, it was believed that N90 was the code name for the GSM version of the iPhone 4, and N92 was the name of its CDMA counterpart.
Another prototype with oblique corners is called the "octahedral iPhone".
This is how he looked.
Luckily it was just a mockup! Just imagine how it would lie in your pocket or in your hand. Whoever came up with it must have been very angry at the time of development. I'm guessing it wasn't John Ive.
And here is the iPad model from 2004. This is how the designers designed the back cover (note the logo).
And here is the screen.
It doesn't look bad, though I'm sure iPad lovers won't be amazed. I am very glad that Apple finally abandoned this model and developed a new design.
Also, more recently, a unique iPad prototype was sold on the eBay online auction. It looked rather odd - with 2 dock connectors on both sides, for portrait and landscape orientation.