With the iPhone Duo, Apple has pulled off a familiar trick. It arrives into a mature Android foldable market with a handful of hardware features we've mostly already seen elsewhere, but paired with a level of software polish that makes a lot of them feel new again. It's those software flourishes that have me excited to try the iPhone Duo when it launches next month, but I'm less convinced that its hardware will be anything special.
If Apple had gotten there first, the Duo's biggest surprise would have been its squat, wide, passport-inspired shape. But its slow-moving supply chain meant that Huawei, Samsung, and Xiaomi all managed to beat Ap …