Overview
- iFixit's teardown confirms larger batteries in eSIM-only models: 4,288 mAh in the iPhone 18 Pro and 5,567 mAh in the 18 Pro Max, validating Apple’s claims of improved endurance.
- The main camera uses a mechanical six‑blade variable aperture system, which iFixit documents alongside the optical assembly and explains how the mechanism enables the selectable ƒ/1.48 to ƒ/4.0 settings.
- Repairability is reduced by design changes: NAND flash now sits inside a dual‑layer logic board that complicates storage repairs, and several units showed cracked or detached plastic screen frames during disassembly.
- Teardown details show a larger vapor chamber and revised internal layout that support sustained performance and the phone’s longer run times, linking physical cooling changes to Apple’s battery and performance claims.
- Apple sells eSIM‑only 18 Pro models in a defined group of countries including the U.S., Canada, Mexico, Japan and several Gulf states, a shift that will affect how consumers use physical SIMs and get service or repairs.