Apple Supposedly Using X86 On iPad As A Compromise To Get Intel To Make iPhone SoC's
If Apple was to switch to x86, which I doubt, it would be a unilateral sweeping change — on both iPad and iPhone. The whole point is that iOS is streamlined and straightforward. The fact that they run on the same architecture is a win in so many ways; the consumer experience, the developer ecosystem, the production economies of scale …
Apple has no incentive to diversify the chip architecture of it’s two flagship products, that thrive on being well integrated and interoperable.