Mobile World Congress 2019 opens to present newest 5G products in Barcelona, Spain

A visitor tries a 5G aerial taxi of Qatar's Ooredoo at Mobile World Congress (MWC 2019) in Barcelona, Spain, Feb. 26, 2019. The four-day MWC 2019 opened its door on Monday, which presents the newest 5G products of the high-tech giants from all around the world. (Xinhua/Guo Qiuda)