iPhone 18 Pro camera bump grows to 13.77 mm, new 48 MP sensor

The iPhone 18 Pro’s main camera module will be more than 2 mm thicker, pushing the overall camera‑bump height to 13.77 mm—a jump of 0.85 mm over the iPhone 17 Pro Max—and will house a new 48 MP ultra‑large sensor with a variable aperture, according to recent leaker data [2]. This physical expansion signals Apple’s biggest camera‑hardware upgrade in the Pro line’s history, a claim echoed by Bloomberg’s Mark Gurman [1].

Bigger sensor, bigger bump

Leaker Fixed Focus Digital reported that the enlarged camera module requires a “more than 2 mm increase in the aluminum alloy back panel,” which aligns with the measured bump height disclosed by YouTuber Vadim Yuryev [2]. The bulk comes primarily from the 48 MP sensor, which is described as “ultra‑large” and paired with a variable aperture—a feature long rumored for the 18 Pro line [2]. Apple’s prior‑generation Pro models used a 48 MP sensor with a fixed aperture; the variable aperture will let users manually control depth of field, a capability previously limited to software‑based tricks [3].

Performance and design shifts

Alongside the camera overhaul, the iPhone 18 Pro is slated to launch the A20 Pro chip, built on a 2‑nanometer process—an industry first for smartphones [3]. The new silicon promises higher clock speeds and better AI handling while improving power efficiency, which should mitigate the battery impact of the larger camera hardware. Design‑wise, Apple is rumored to integrate Face ID under the display, removing the visible notch and delivering a cleaner “dynamic island” [3]. A dark cherry color finish is also expected, though concerns linger about the long‑term durability of this new shade [3].

Market implications

The thicker camera bump challenges Apple’s recent trend of slimmer profiles, but it also positions the 18 Pro as a clear step up from competitors that have been limited to 12‑MP sensors and fixed apertures. Samsung’s Galaxy S Series, for example, still caps its main sensor at 50 MP with a fixed aperture, meaning Apple’s variable‑aperture system could become a differentiator for photography‑focused users. However, the larger module may affect ergonomics and case compatibility, potentially nudging some buyers toward the non‑Pro 18 models or rival flagships.

What to watch

• Official launch event date for the iPhone 18 Pro (expected in September 2026).
• First‑hand benchmark results of the A20 Pro chip versus Qualcomm’s Snapdragon 8 Gen 3.
• Consumer feedback on the durability of the dark cherry finish once devices reach retail.

The camera‑bump enlargement underscores Apple’s willingness to trade thinness for photographic capability, a move that could redefine the premium‑smartphone value proposition and set a new baseline for future Pro models.