iPhone 18 Pro leak reveals LPDDR6 memory and a new cooling trick
A security breach at a Tata Electronics factory last week leaked logic board designs for the iPhone 18 Pro, giving the clearest look yet at Apple's next flagship chip. The stolen 630GB dataset, confirmed by AppleInsider, includes A20 Pro datasheets that point to two significant changes: a new memory standard and a redesigned chip packaging layout. If accurate, these are the most meaningful internal upgrades since Apple moved to its own silicon.
The memory jump
The A20 Pro appears to use LPDDR6 RAM with a 96-bit memory bus — a 50% wider bus than the LPDDR5X standard used in current Android flagships and, until now, expected in iPhone 18 as well. Analyst Ming-Chi Kuo predicted LPDDR5X as recently as April 2025, so the switch to LPDDR6 is a notable reversal. Snapdragon 8 Elite Gen 6 Pro already ships with LPDDR6, meaning this would bring iPhone up to speed with Android's memory bandwidth rather than lagging behind it.
Leaked A20 Pro logic board image, purportedly showing the iPhone 18 Pro and Pro Max motherboard layout.
The cooling redesign
The second change is structural. Apple appears to be adopting WMCM (Wafer-level Multi-Chip Module) packaging, which places the DRAM beside the processor rather than stacked directly on top of it. The conventional stacked layout concentrates heat between two chips running simultaneously; the side-by-side arrangement spreads that heat more broadly. MacRumors notes the A20 Pro chip itself is roughly the same physical size as the A19 Pro — the thermal benefit comes from layout, not a larger die.
The practical target is AI. Apple's Neural Engine is noticeably larger in the A20 Pro, and sustained on-device AI tasks — photo processing, live translation, Apple Intelligence features — generate consistent heat over time, not just brief spikes. Samsung and Qualcomm are pursuing similar side-by-side memory layouts for the same reason.
What to expect
The iPhone 18 Pro is expected to launch in September 2026, built on TSMC's 2nm process. Pricing and color options were not part of the leaked schematics. One caveat worth noting: physical motherboard leaks are rare for Apple, and the authenticity of the images has not been independently verified. The thermal benefits of WMCM are also theoretical until real-world benchmarks arrive post-launch.
Still, if the specs hold, the iPhone 18 Pro would close a memory bandwidth gap that Android flagships have held through the entirety of 2025.
