Foldable iPhone expected to help drive adoption of book-type devices: report

Apple's rumored entry into the foldable iPhone market with a book-type device featuring a 5.5-inch outer display and 7.8-inch inner display is expected to significantly boost adoption of this form factor. According to Counterpoint Research, Apple's influence will help book-type foldables reach 65% of total foldable shipments in 2026, up from 52% in 2025. The shift toward premium devices is also being driven by memory supply shortages, pushing manufacturers to prioritize higher-margin foldable phones over volume sales.