The U.S. Justice Department charged Huawei and its chief financial officer, Meng Wanzhou, on Monday with conspiring to violate U.S. sanctions on Iran by doing business with Tehran through a subsidiary it tried to hide.

Separately, it said Huawei also stole robotic technology from carrier T-Mobile US Inc.

Wen Ku, a senior information and communications officer at the Ministry of Industry and Information Technology, or MIIT, told a news conference in Beijing the indictments were "unfair and immoral".

(Reporting by Cate Cadell; Writing by John Ruwitch; Editing by Paul Tait)