LG curved G Flex smartphone 'to rival Samsung Galaxy Round' The curve is designed to ergonomically fit around the user's face as they use the smartphone. Pictures show the LG G Flex will use similar button placement to the LG G2, which has rear buttons to provide more space for the battery and increase battery life. Research firm IHS Display predicts the global flexible display industry will see dramatic growth in the coming years, becoming a $1.5 billion (£900 million) market by 2016 and exceeding $10 billion by 2019. Compare the best mobiles and deals with The Telegraph Mobile Comparison >