I don’t follow the smartphone market much at all, but I read general technology news feeds all the time. Articles in which reviewers rip open new Apple gadgets and talk about the internals I usually hear stuff like “Apple’s such and such CPU” and then “which is the equivalent of a Samsung something or other.” Basically meaning that yes, Apple does have companies like Samsung make a special line of processors “just” for Apple. You can’t get a Samsung A4 processor unless you’re Apple, but Samsung also makes a processor called the S5PC110 which is apparently identical to the A4 in every way. It doesn’t really seem to hold water to me that Apple is inventing new hardware. Apple’s creativity is in how it links that hardware together into a coherent whole, they aren’t an Intel or a Samsung. Most likely when something like the A4 is developed, where there isn’t an existing market for it you had Apple going to Samsung and saying, “hey we want a processor that can do this, for a new gadget we’re making.” Then Samsung puts its engineers on it, so it seems disingenuous to claim Apple is inventing all kinds of new hardware when the chips are being made by another company.
This article also talks about how a die-by-die comparison was done of the A4 (the Apple specific processor manufactured by Samsung) and the S5PC110 (the processor Samsung is apparently using in its own smartphones) and they are identical.