The iPhone 18 Pro Max's thickness has been a topic of much speculation and discussion, with recent leaks causing a stir in the tech community. The initial expectation was that the iPhone 18 Pro Max would be slightly thicker than its predecessor, the iPhone 17 Pro Max, at 8.8mm. However, a recent revision by Weibo leaker Ice Universe has brought this expectation into question. The revised thickness is now 8.75mm, matching the iPhone 17 Pro Max, which has raised eyebrows and sparked further analysis and commentary.
Ice Universe's revision is significant because it represents a change in a specific number without a stated rationale. This is unusual in supply-chain leaks, where changelogs are typically provided. The question remains: why the change? Is it a different production sample, a shift in measurement methodology, or updated specs from further down the supply chain? These are the questions that need to be answered.
The battery and weight claims, which were part of the original thickness argument, have remained untouched. The battery estimate from Digital Chat Station is still 5,100–5,200 mAh, compared to 5,088 mAh in the current model. This is a claimed increase of up to roughly 112 mAh inside a chassis that is now rumored to be identical in thickness to its predecessor. The weight claim, over 240 grams from Instant Digital, is also unrevised. These figures were originally part of the same case for a thicker chassis, and the thickness has changed, but they haven't.
The 6.9-inch display footprint is expected to stay unchanged, and the revised 8.75mm thickness matches the iPhone 17 Pro Max exactly. This means that the Pro Max line has already stepped up in thickness across recent generations. The more substantive changes are expected to be internal, with the iPhone 18 Pro lineup reported to include a smaller Dynamic Island, Apple's in-house C2 modem, a simplified Camera Control system, and a main camera with variable aperture.
The battery and weight claims are the more consequential unknowns. They have remained static through multiple rounds of revision from other sources, which is either a sign of reliability or simply the absence of updated information. The signals worth watching are regulatory filings confirming actual battery capacity, dummy unit measurements from case manufacturers as the launch window approaches, and independent corroboration on the battery and weight figures from sources other than Ice Universe.
In conclusion, the iPhone 18 Pro Max's thickness has been a topic of much speculation and discussion, with recent leaks causing a stir in the tech community. The revised thickness of 8.75mm is significant, and the battery and weight claims are the more consequential unknowns. The signals worth watching are regulatory filings, dummy unit measurements, and independent corroboration. Until more concrete data arrives, the honest read is a phone that hasn't changed where you can see it, with the changes below the surface still to be confirmed.
