The upcoming iPhone 18 Pro, expected in September 2026, could see a notable increase in thickness, potentially reaching around 10.75mm. This represents a significant jump from the 8.75mm depth of the iPhone 17 Pro models, an increase of approximately 23%.

This added thickness is largely attributed to a redesigned and potentially larger camera bump. While the exact reasons for the change remain speculative, rumors suggest it could accommodate upgraded camera hardware or a larger battery cell to improve battery life. The move back to an aluminum casing is also mentioned, with its heat dissipation properties cited as a reason for its continued use over titanium.

While the source, Fixed Focus Digital on Weibo, has a mixed track record for leaks, a 2mm increase in thickness is substantial for a smartphone. This change would impact the device's ergonomics, a factor Apple typically prioritizes minimizing. The actual specifications will be confirmed upon Apple's official announcement.