BARCELONA, Spain—A global battle between the U.S. government and Huawei over allegations that the Chinese tech company is a cybersecurity risk is overshadowing the opening of the world’s biggest mobile industry trade fair.
Huawei has an outsized presence at MWC Barcelona, a four-day industry showcase of mobile devices and innovations that opened Feb. 25 and is expected to draw 100,000 visitors. The focus at this year’s meeting is new 5G networks due to roll out in coming years. But the dispute over Huawei, the world’s biggest maker of networking gear, is casting a pall.
