Samsung Galaxy S9 and S9+ launched with first dual-aperture camera

Revamped all-screen design brings new AR emoji, stereo speakers, new 960fps slow-mo and potentially game-changing camera

Samsung has launched its latest flagship smartphone, the Galaxy S9, with a familiar all-screen design but its re-invented camera system could be a game-changer.

Announced at the Mobile World Congress in Barcelona on Sunday, the new top-end Android device comes in two varieties, following in the footsteps of last year's popular Galaxy S8 in both look and feel. They have glass front and back, metal frames, curved edges, are water resistant, have wireless charging and a headphone socket.