New and improved camera capabilities are the main thrust of Samsung’s pitch for its latest flagship smartphones, the Galaxy S9 and larger S9+.

The handsets gain a super-slow-motion facility designed to make it easy to extend key moments of action. They also gain a type of lens that should improve low-light photography.

Samsung’s sales rose in 2017 but not as fast as those of many Chinese rivals.

Experts suggest the new facilities represent minor upgrades.

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