Apple's iPhone 18 Pro Max may be its heaviest phone in years
The Apple iPhone Pro Max lineup may reverse a years-long slimming trend. According to leaker Ice Universe, the iPhone 18 Pro Max could weigh 240 grams and measure 9mm thick—roughly 7 grams and 0.25mm more than the iPhone 17 Pro Max—to accommodate a significantly larger battery and upgraded internal cooling. Chinese regulatory filings cited this week also point to a major battery bump, trading pocket-friendly thinness for endurance.
Key Takeaways
- Ice Universe claims the iPhone 18 Pro Max may hit 240g and 9mm thickness with a ~5,500mAh battery.
- That would tie the iPhone 14 Pro Max as one of Apple's heaviest iPhones at 240 grams.
- Counterpoint Research estimates the 1TB model's bill of materials could rise by nearly $300.
- Memory chip shortages are driving NAND and DRAM costs sharply higher, analysts say.
- Consumers may see average price increases around $200, with official details expected in September.
Why might the iPhone 18 Pro Max feel heavier in your hand?
New claims from Weibo leaker Ice Universe, reported by Mashable, describe a trade-off Apple appears willing to make. The iPhone 17 Pro Max is already 8.75mm thick and 233 grams; the rumored iPhone 18 Pro Max would add a quarter-millimeter and seven grams.
MacRumors has noted Apple may adopt a new stainless-steel vapor chamber for cooling, which could contribute additional weight beyond the battery alone. For context, the iPhone 14 Pro Max remains tied for Apple's heaviest phone at exactly 240 grams—so the next Pro Max could match that record.
How much bigger is the iPhone 18 Pro Max battery?
Regulatory filings uncovered this week suggest the iPhone 18 Pro Max battery could jump by nearly 500mAh compared with its predecessor. Ice Universe pegs capacity at about 5,500mAh, while filings have cited figures including 5,567mAh for U.S. eSIM models and 5,391mAh for China models with physical SIM trays.
The standard iPhone 18 Pro may see only a modest battery increase, so thickness and weight changes on that model could be less dramatic.
Will a chunkier iPhone 18 Pro Max cost more at launch?
Size is not the only headline. A separate Counterpoint Research analysis, covered by AppleInsider, estimates the bill of materials for a 1TB iPhone 18 Pro Max could climb roughly $300 versus the equivalent iPhone 17 Pro Max.
NAND flash and DRAM are the biggest drivers amid a global memory shortage—Counterpoint expects those parts alone to approach the entire prior model's component budget. Display costs may fall slightly, while a new variable-aperture main camera could nudge camera expenses up. AppleInsider reports analysts expect an average $200 retail price hike, though margins may still shrink because production costs are rising faster than sticker prices.
When will we know if the iPhone 18 Pro Max is really this heavy?
All of these figures remain pre-release estimates tied to leaks and supplier research—not Apple's official spec sheet. Apple typically unveils new iPhones in September, and only then will buyers know whether the Apple iPhone Pro Max gains real-world heft for extra battery life.
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