LG G Flex officially unveiled, with 6-inch 720p curved display

South Korea's LG Electronics Inc unveiled a curved smartphone G Flex on Monday in a move to catch up bigger rival Samsung Electronics Co.

Curved displays and flexible screens are the new battleground for phone makers as the screens open up possibilities that could eventually transform the high-end smartphone market.

Curved smartphones provide a more comfortable grip than flat-screen models, but the lack of must-have features means they are unlikely to be big consumer hits anytime soon, analysts have said. Manufacturing costs also remain relatively high.

Both Samsung and LG's curved phones are only available in the South Korean market as they seek to gauge consumer appetite.

Samsung launched a variant of the popular Galaxy Note earlier this month as the world's first smartphone with a display slightly curved side to side.

The model launched on Monday by LG Electronics has a vertically curved six-inch display. The company said the phone will be available from next month through South Korea's three mobile carriers.

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