Apple doesn't advertise RAM, but MacRumors confirmed via Xcode 27 that the iPhone 18 Pro and Pro Max each have 12GB. The iPhone Duo, with the same A20 Pro chip, likely also has 12GB. This matches the iPhone 17 Pro series, so no RAM increase.

Due to a chip shortage, prices rise by $100: the Pro starts at $1,199 and Pro Max at $1,299. Pre-orders begin September 12 at 5 a.m. PDT, with launch on September 18.