A first look at the Samsung Galaxy S9

Samsung is using a big event in Barcelona to introduce its latest pair of flagship phones, the Galaxy S9 and larger-screen S9+. The devices are similar in appearance to last year's S8 and S8+, but add a more powerful processor and an improved camera that packs a pair of fun features: AR Emoji and Super slo-mo. (This video shows the new camera and features in action.

Why it matters: Increasingly, Samsung and Apple are not only competing against each other, but also against the fact that people already have a pretty powerful smartphone in their pocket.