CES 2019: This year’s highlights include a foldable smartphone and table tennis robot

The world’s first foldable-screen smartphone and a robot that teaches people to play table tennis are among some of the eye-catching attractions on display as this year's CES tech show. Martyn Landi reports from Las Vegas... More than 180,000 people are expected to visit during the four-day convention, which is hosting the latest gadgets from…