About $1 billion in Apple processors sits unfinished at chip plants for want of memory, slowing assembly of the iPhone 18 Pro and the company's first foldable iPhone.
Key Points:
- Finished A20 Pro wafers are stacking up at TSMC because the memory needed to package them has not arrived.
- Foxconn and BYD have less time to build launch stock, raising the risk of longer waits after September.
- Apple's push for cheaper Chinese memory collapsed on price, keeping supply tight into next year.
Memory Shortage Stalls A20 Pro Chips
Taipei-based journalist Tim Culpan reported Thursday that finished A20 Pro wafers are stacking up at TSMC because the memory needed to complete them has not turned up.
Yields on the chip are strong and quality control is not the issue, according to his supply chain sources. The bottleneck sits on the memory side alone, not on the foundry.
Nothing downstream moves until that packaging clears.
Apple's first processor on TSMC's N2 node does not travel down the line as a bare chip, because the memory is bonded to it at the wafer level rather than soldered on afterward. That step, called Wafer-Level Multi-Chip Module, replaces the fan-out packaging TSMC has leaned on for about a decade, and Culpan has described it as CoWoS for mobile. Without a packaged A20 Pro there is no logic board, and without a logic board there is no phone.
Also Read: iPhone 18 Pro Max Could Be First With Apple's 2nm Chip, 15% Faster
Foxconn And BYD Face Shorter Run-Up
Foxconn and China's BYD handle logic board work and final assembly for the coming iPhones inside mainland plants. Culpan estimates TSMC is holding roughly $1 billion in Apple processors that cannot advance, which leaves both assemblers a shorter run-up to build the reserve stock that fills launch-day orders.
Apple and its partners still expect to cover demand on opening weekend. They worry instead about online wait times stretching and store inventory draining in the weeks after September.
Assemblers have been told the company plans about 200 million units across the foldable iPhone Ultra, the iPhone 18 and the iPhone 18 Pro over the generation.
Foldable iPhone Timeline Draws Fresh Doubt
Relief looks distant, since memory makers are steering capacity toward server parts that pay far better than the DRAM that phones use. A bid for cheaper chips from Chinese supplier CXMT collapsed on price, leaving Apple leaning mainly on Micron, with smaller volumes from SK Hynix and Samsung.
The foldable has absorbed a run of contradictory production reports since spring, from trial assembly in April to hinge durability tests that stalled the ramp in May.
A July supply chain report put engineering validation one to two months behind, and a leak on Aug. 3 disputed that, saying the scaling problems had been fixed without a redesign. Apple is still expected to show the device in September with a book-style body, an inner screen close to 7.8 inches and a price above $2,000.
Read Next: Bitcoin Could Turn Extreme Fear Into Fuel For A $75K Rally
