TrendForce estimates that the bill of materials (BOM) cost for the 256 GB iPhone 18 Pro will rise by around 38% compared to the iPhone 17 Pro, driven almost entirely by memory pricing. Memory has now overtaken the application processor and display as the single largest cost component, a reversal from prior generations. With memory prices up five to sevenfold since early 2025, some vendors may need to raise prices sharply or drop product lines that have become unprofitable. Note that these are TrendForce's supply chain cost estimates and projections, not confirmed pricing from Apple. Final retail prices and specs for the iPhone 18 Pro may differ once Apple makes an official announcement, expected around September 2026.