AI Demand Eats Fab Capacity. Explosive demand for AI data-center chips—especially High Bandwidth Memory (HBM)—has diverted the most advanced fab capacity away from general-purpose DRAM used in phones . Samsung and SK Hynix both allocate their newest lines to HBM, where margins are higher, tightening supply of mobile DRAM.
The DRAM Triopoly. Samsung, SK Hynix, and Micron control the vast majority of global DRAM output. With only three dominant players, supply constraints are quickly felt across the market .
DDR4-to-DDR5 Transition. The industry-wide shift to DDR5 memory creates production disruption as older lines are phased out and newer ones take time to reach volume.
At the same time, Apple tried to use Chinese memory maker CXMT (ChangXin Memory Technologies) as a leverage play to push down mobile DRAM prices. The strategy collapsed :
In late July 2026—days before the August 5 events—a bipartisan group of U.S. senators led by Senate Majority Leader Chuck Schumer (D-NY) and Senator Jim Banks (R-IN) sent a letter to Apple CEO Tim Cook demanding that Apple publicly commit to never using memory chips from CXMT or YMTC :
This political pressure on Apple to exclude CXMT as an option—combined with CXMT's own refusal to offer discounted pricing—leaves Apple with fewer alternatives and reinforces the pricing power of Samsung and SK Hynix.
The chain runs like this: AI demand, the triopoly structure, and the DDR5 transition created the underlying supply squeeze. Chinese brands already bought up CXMT's output, so CXMT could stiff Apple's price-cut request. U.S. political pressure took CXMT off the table as an alternative. Yu publicly warned the whole smartphone industry would have to raise prices or bleed. Samsung and SK Hynix benefit on both the HBM and mobile DRAM sides.