Overview
- Multiple regulatory listings and reporting indicate the iPhone 18 Pro Max may gain roughly 500mAh of capacity versus the iPhone 17 Pro Max, with U.S. and China filings showing about 5,567mAh and 5,391mAh respectively.
- High‑profile Weibo leakers have pegged the Pro Max at about 9mm thick and roughly 240 grams, and they attribute the change mainly to the larger cell and a new stainless‑steel vapor chamber for improved cooling.
- Several outlets and CAD/dummy‑unit reporting dispute a large overall chassis thickening, saying the visible change may be confined to a deeper camera plateau rather than the entire body, leaving the exact dimensions unclear.
- Analyst bill‑of‑materials estimates point to rising NAND, DRAM and advanced SoC packaging costs for the 2nm A20 Pro, increasing the chance of higher retail prices and tighter availability for high‑capacity configurations.
- If true, the shift would mark a trade‑off in Apple’s design choices where users gain notably longer runtime and better thermal headroom but may accept a heavier handset and steeper prices when the line is unveiled in September.