iPhone 18 Pro teardown reveals battery boost and variable aperture upgrade

The recent iPhone 18 Pro teardown by iFixit uncovers a modest battery lift and a novel variable‑aperture lens system.

iPhone 18 Pro teardown details

Battery capacity for the eSIM‑only iPhone 18 Pro registers ↑ 0.8% at 4,288 mAh, edging out the 4,252 mAh pack in the prior generation. The 18 Pro Max bumps its cell to ↑ 9.4% 5,567 mAh, a sizable jump from 5,088 mAh.

These figures apply to markets where Apple sells eSIM‑only units – the United States, Canada, Mexico, Japan and several Gulf states – while other regions retain a physical SIM tray.

Beyond power, the teardown highlights a dual‑layer logic board that now houses NAND flash, complicating storage repairs. The cooling architecture expands the vapor chamber, promising steadier performance under load.

iFixit observed that three of four opened iPhone 18 Pro displays exhibited a cracked or detached plastic frame – an issue not seen on earlier models. The firm cautions that further testing is required.

For a visual walk‑through, see iFixit’s video on YouTube. Industry reactions are tracked by Reuters.