Samsung is courting some of rival Apple’s main parts suppliers as in-house supply lines get stretched.
After costly courtroom battles over technology patents, the two gadget giants are now going head-to-head over securing the best supply of parts as they jostle to rule the $253bn smartphone market.
Trampling on Apple's supply patch could make life tough for the US firm as it prepares for its next product line-up including a cheaper iPhone for emerging markets such as China.
Having Samsung muscle in on its suppliers could drive up costs and lead to component bottlenecks, disrupting product launches.
Samsung's huge in-house supply chain – providing parts from displays and powerful processors to memory chips and batteries – has been a core strength in its war for smartphone supremacy, which has seen it overtake Apple as the world's leading maker of smartphones.
As it now looks to widen its lead with products spanning both the high and cheap-and-cheerful ends of the market, Samsung's supplies have become stretched, prompting it to hunt elsewhere to ensure it isn't caught short.
"The next round of the post-patent battle for them will be over component supplies," says Lee Sun-tae, an analyst at NH Investment & Securities. "Who wins access to the best performing components in class in large quantity; that's the key ... and explains why Samsung is shopping for components more than ever."
Samsung has made overtures to traditional Apple partners such as Japanese display maker Sharp Corp and South Korean chipmaker SK Hynix.
Samsung, which buys most of its mobile screens from its Samsung Display unit, last year placed orders with Sharp for high-resolution LCD screens for its popular Galaxy range of products, though it later cancelled the order, said two people familiar with the matter, asking not to be named as the negotiations were confidential.
Sharp, in which Samsung bought a 3 per cent stake earlier this year for $110m, said this week it was seeking to boost sales to the Korean firm, potentially souring the Japanese company's ties with Apple.
Samsung is also using more chips made by Qualcomm, another major Apple supplier, in its flagship Galaxy S, which went on sale late last month.
Some other suppliers who provide parts to both Apple and Samsung include Toshiba in NAND memory chips, Sony, in image sensors, and Corning for its Gorilla Glass used in iPhones, iPads and Galaxy products, industry data show.
STMicroelectronics and Bosch, the only mass producers of pressure sensors used in navigation features, supply those parts for the Galaxy range, and could be tapped by Apple for future products, according to research firm iSuppli.
Samsung still buys the majority of its components in-house, and the overlap with Apple on external suppliers is, so far, limited. BNP Paribas estimates that more than 80 per cent of component profits generated by Galaxy S4 sales go to Samsung itself and its units.
But even a tiny overlap can be damaging as smartphones are constantly upgraded to more powerful computing and media devices – allowing users to take pictures, shoot video, play music, game online, watch TV and navigate – raising the need for more and smarter components.
"Any disruption in even small parts that you wouldn't think are really core, say headphones, can affect product launches," says Lee.
For example, Taiwan's HTC, which has slipped out of the top-10 smartphone makers, reported a record-low quarterly profit last month after delaying the full launch of its flagship model due to a shortage of cameras.
"Having a single supplier carries a lot of risk. Bearing that in mind, Samsung may even consider using LCD along with OLED in its signature Galaxy S range to reduce its total reliance on Samsung Display," says Song Jong-ho, an analyst at KDB Daewoo Securities.
Samsung Display doesn't produce LCDs for smartphones so as it boosts sales at the lower end of market it needs to outsource LCDs. The Korean firm uses the more expensive OLED display only on its high-end models.