In a report this week estimating that the iPhone 18 Pro's bill of materials will be nearly 40% higher than the iPhone 17 Pro, Taiwanese research firm TrendForce said the iPhone 18 Pro will start with 256GB of storage, matching the iPhone 17 Pro's minimum capacity. The report did not explicitly mention the iPhone 18 Pro Max, but the Pro and Pro Max models have started with the same amount of storage for the past two generations. Minimum storage capacities by model:iPhone 16 Pro: 128GB128GB iPhone 17 Pro: 256GB256GB iPhone 18 Pro (rumored): 256GBEven though it does not expect an increase in base storage, TrendForce said that retail price increases for the iPhone 18 Pro models are "unavoidable" due to increased costs for components. According to reports, iPhone 18 Pro starting prices in the U.S. could be $200 to $300 higher compared to iPhone 17 Pro starting prices. If so, the iPhone 18 Pro and iPhone 18 Pro Max could start at up to $1,399 and $1,499, respectively.