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Electronics firm LG has shown off a second version of its curved smartphone at the Consumer Electronics Show. The LG G Flex 2 is smaller than its predecessor and its display can now handle high-definition images. The "self-healing" coating on its rear has also been improved to quickly repair any scratches it suffers. Gadget-watchers were divided over the phone, with some praising its performance while others were unimpressed. LG has not said when the phone will go on sale nor said how much it will cost. Curved questions The updated G Flex has an OLED (organic light-emitting diode) display 5.5in (14cm) in size - a half-inch smaller than the original - and the curve of the whole device is less pronounced than the first version. LG said the self-healing coating covering the back of the phone will now seal scratches in 10 seconds or so. Earlier versions took minutes to do the same. The OLED screen also helps make the phone very resistant to damage from being inadvertently sat or stepped on, said the firm. Also onboard are a 13.1 megapixel camera on the handset's rear and a 2.1 megapixel camera facing forwards. Inside the phone is the latest Qualcomm 810 processor and the gadget runs LG's version of Google's Android operating system.