Is it a phone or is it a notebook? In the case of Microsoft’s Surface Duo, the answer is it’s both. The dual-screen Android smartphone ($1,399) opens like a spiral binder, revealing a pair of screens. Unfold it and it’s a digital notebook—drag items from one app to another, expand a single app to fill both screens (perfect for reading), or use a Surface Pen to get some writing done on one screen while you chat on the other. You can also fold the device back over itself and use the single screen as a traditional cell phone. The Surface Duo feels like a concept device but also a glimpse into the future of mobile computing: it won’t replace your iPhone and its killer camera just yet, but it’s easy to see how it one day might. —Patrick Lucas Austin
Buy now: Microsoft Surface Duo
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