iPhone Duo to Get Day-One iOS 27.1 Update

The foldable iPhone Duo ships with iOS 27.1 (build 24A94232), but Apple has already released build 24A94425, so buyers will need to update during setup. Pre-orders open October 16, with sales starting October 23.

• iPhone Duo ships with iOS 27.1, a version exclusive to the foldable
• Apple released new build 24A94425, replacing 24A94232
• Pre-orders begin October 16 at 5 a.m. Pacific Time
• Launch is set for October 23 amid expected supply constraints