Google has barred phone maker Huawei from some updates to the Android operating system, dealing a b low to the Chinese firm. New designs of Huawei smartphones are set lose access to popular Google apps.
The move comes after the Trump administration added Huawei to a list of companies that American firms cannot trade with unless they have a licence.
In a statement, Google said it was "complying with the order and reviewing the implications".
Huawei declined to comment.
What does this mean for Huawei users?
Existing Huawei smartphone users will be able to update apps and push through security fixes, as well as update Google Play services.
But when Google launches the next version of Android later this year, it may not be available on Huawei devices.
Future Huawei devices may no longer have apps such as YouTube and Maps.
Huawei can still use the version of the Android operating system available through an open source licence.
Ben Wood, from the CCS Insight consultancy, said the move by Google would have "big implications for Huawei's consumer business".
What can Huawei do about this?
Last Wednesday the Trump administration added Huawei to its "entity list" which bans the company from acquiring technology from US firms without government approval.
In his first comments since being placed on the list, Huawei chief executive Ren Zhengfei told Japanese media on Saturday: "We have already been preparing for this."
He said the firm, which buys about $67bn (£52.6bn) worth of components each year according to the Nikkei business newspaper, would push ahead with developing its own parts.
Short-term damage for Huawei?
In the short term, this could be very damaging for Huawei in the West.
Source https://www.bbc.com/news/business-48330310