The first generation Microsoft Surface Duo was released more than two years ago, and after a series of software updates, it’s become one of my favorite pocket-sized gadgets for fun and productivity.

That makes it easy to compare one new smartphone with another. You can see what has changed and the difference is quantifiable. More importantly, you will use both smartphones in the same way. There’s ...

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. I started with CNET reviewing ...