Apple is unveiling its latest generation of iPhones on Wednesday at an event headlined by new CEO John Ternus, who took over from Tim Cook on Sept. 1.

Before today, Apple really didn’t have a device that sat between an iPhone and an iPad. The iPad mini is bigger than the iPhone Duo, with a screen size of a little over 8 inches. But the iPhone Duo’s functionality and bigger screen size make me wonder if it’s the perfect handheld device if you’re already considering a new iPhone and iPad.

With foldables, the idea since the start was a tablet-sized screen that fits in your pocket. The best tablets are iPads, which is why the iPhone Duo matters — and not just for Apple. For the first time, the company that makes the best tablet is making a foldable.