Opening day of Mobile World Congress in BarcelonaA man tests a simulator at the automobile maker Seat ' s booth , which presents its SEAT ID connectivity system , during the opening day of the Mobile World Congress ( MWC ) at the L ' Hospitalet de Llobregat congress center , in Barcelona , northeastern Spain , 27 February 2017 . More than 101 , 000 professionals and 2 , 200 exhibitiors attend the congress said to be the largest of its kind for the mobile industry from 27 February to 02 March which is expected to be visited by tens of thousands of visitors . EPA / TONI ALBIR 대박 난 흥부 가 즐겨 찾 는 # 흥 ( 클릭 ! )