The iPhone 5S to sit on store shelves later this year will have components sourced from Apple's arch foe, Samsung, despite the former's moves of gradually easing out the Galaxy maker from its supply chain system.

This was revealed by 9to6Mac on its report, claiming that imprints of the South Korean tech giant will linger on the A7 processing chips that reportedly will be the power behind the upcoming 5S.

Specifically, the Samsung components will be used to fire up the 5S display panel, which incidentally could be an iPhone part that also carries the Samsung brand.

According to CNET, Apple would likely order processing chip components both from Samsung and Taiwan Semiconductor Manufacturing Company (TSMC), the latter having secured a supply agreement with the tech giant in June 2013.

It appears that the iPhone maker is sourcing its manufacturing and component requirements to as many sources as possible in order to achieve supply stability and dependability, leading to fewer chances of production issues and shipment delays sprouting.

This has been voiced out by Apple before, hence the contracting of Pegatron to help Foxconn in the ramp up production of the iPhone 5S and the iPhone 5C or iPhone Lite.

So in the future, Apple will come up with the A8, A9 and A9X chips with the help of TSMC and Samsung, CNET said, pointing to a scenario in which upcoming iPhone and iPad builds will compete with Galaxy rivals while having similar components inside and out.

While regarded as a minor jump from the iPhone 5, many analysts are under the impression that the 2013 iOS 7 smartphone flagship is packed with sufficient killer features and component upgrades - chief of them a Retina+ screen that delivers around 1.5M of pixels and faster CPU, likely of the quad-core class.

These bump ups are made possible by the use of A7 chips with the 5S, Apple watchers said.

The iPhone 5S is set for a release date between late September and early October 2013, touching down a few weeks after the double-debut of the low-cost iPhone 5 and the slimmed down iPad 5.