Chinese company Huawei has been banned from accessing parts of Google's Android mobile operating system.
The ban comes after the US government placed the company on a trade blacklist.
Android o.s. plays a significant part in Huawei's smartphone business as the second-largest smartphone maker in the world.
What happened to the last company banned by the U.S. Government?
China telecoms company ZTE was previously blacklisted by the US when they violated sanctions against North Korea and Iran.