An image circulating on Chinese social media appears to show the iPhone 18 Pro motherboard, offering a clear preview of the chip architecture planned for Apple’s upcoming September flagship release.
The image shows Apple’s A20 Pro chip built using a new TSMC manufacturing approach called Wafer-Level Multi-Chip Module technology.
That shift matters to ordinary users in one specific way: the phone should run faster for longer without slowing down from heat.
Apple’s Chip Packaging Gets a Significant Redesign
On current iPhones, the memory sits directly on top of the main processor. That arrangement keeps the design compact, but it also concentrates heat in a small area.
When the chip runs hot during intensive tasks like editing video, playing demanding games, or running on-device AI features, performance can be throttled to manage temperature.
In the A20 Pro design visible in the leaked image, the memory has been repositioned to the side of the chip rather than stacked on top of it.
Heat generated by the processor and memory no longer compounds in the same spot, which should allow the phone to sustain higher performance during long or demanding sessions.
Apple is also reportedly using LPDDR6 memory connected via a wider 96-bit bus, delivering more data throughput per watt than the current generation.
A Bigger Bet on On-Device AI
The leaked image also shows that the Neural Processing Unit inside the A20 Pro is substantially larger relative to the rest of the chip than that of the A19 Pro.
Apple has been expanding its on-device AI capabilities with each successive release, and a larger NPU would enable more complex AI tasks to run locally rather than to be offloaded to a server.
For users already testing Apple Intelligence features in iOS 27, that could mean faster responses and fewer tasks queued for cloud processing.
The A20 Pro is also expected to be manufactured on TSMC’s 2nm process, one generation ahead of the chips inside the current iPhone 17 Pro.
Early projections for this process node suggest the A20 Pro could deliver up to 15 percent faster performance and roughly 30 percent better energy efficiency than the A19.
If those figures hold, the iPhone 18 Pro could offer meaningfully better battery life without any change to the physical battery size.
The A20 Pro Expands Beyond the Pro Models
Apple’s upcoming foldable iPhone, expected to be called iPhone Ultra, is set to share the A20 Pro chip alongside the iPhone 18 Pro and Pro Max.
All three models are reportedly configured with 12GB of RAM, 48-megapixel rear cameras, and Apple’s in-house C2 modem.
The foldable has been in development for years and would mark Apple’s entry into a category dominated by Samsung.
TSMC’s new manufacturing process also introduces high-performance capacitors into the chip’s power delivery system, more than doubling the capacitance density of the previous generation.
In practical terms, that supports more stable power delivery during peak workloads, which contributes to both sustained performance and overall efficiency.
The leaked image has not been verified by Apple or TSMC, though the packaging technology shown has been referenced in multiple supply chain reports going back to late 2024. Apple typically announces new iPhone models at an event in early September.
