Foxconn halts some production lines for Huawei phones, according to reports

These reports from The South China Morning Post are the clearest indication that the ramifications of the U.S. blacklisting are beginning to be felt across Huawei’s phone business outside of China.

Huawei was already under fire for security concerns, and will be forced to contend with more if it can no longer provide Android updates to global customers.

Contingency planning is already underway at Huawei. The company has built its own Android -based operating system, and can use the stripped down, open source version of Android that ships without Google Mobile Services. For now, its customers also still have access to Google’s app store. But if the company is forced to make developers sell their apps on a siloed Huawei-only store, it could face problems from users outside of China.

Huawei and the Chinese government are also retaliating against the U.S. efforts. The company has filed a legal motion to challenge the U.S. ban on its equipment, calling it “unconstitutional.”  And Huawei has sent home its American employees deployed at RD functions at its Shenzhen headquarters.

It has also asked its Chinese employees to limit conversations with overseas visitors, and cease any technical meetings with their U.S. contacts.

Still, any reduction in orders would seem to indicate that the U.S. efforts to stymie Huawei’s expansion (at least in its smartphone business) are having an impact.

A spokesperson for Huawei U.S. did not respond to a request for comment.