China has urged Washington to stop putting unreasonable pressure on Chinese companies.
Chinese Foreign Ministry spokesman Geng Shuang said United States should provide a fair, non-discriminatory investment environment for them in their country.
He said State-owned China Mobile sought approval in 2011 to provide interconnection services for phone calls between the United States and other countries. It had not sought approval to provide wireless services to U.S. consumers.
China Unicom Chairman Wang Xiaochu said at a press conference in Hong Kong that the company abides by local law in every country it operates in and that there is no reason for the U.S. to revoke its authorization.