Google has barred the world's second biggest smartphone maker, Huawei, from some updates to the Android operating system, dealing a blow to the Chinese company.
New designs of Huawei smartphones are set to lose access to some 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.
Google said it was "complying with the order and reviewing the implications".
Huawei declined to comment.