Foldable iPhone's Screen Sizes Leaked, Apple's first foldable iPhone will be equipped with a 7.7-inch inner display, and a 5.3-inch outer display, according to The Information. The foldable iPhone's displays are made with a "complex" mix of "specialty glass and materials" from companies like Corning and SCHOTT, according to the report. Apple is expected to release the foldable iPhone in September 2026.