The founder of Huawei has taken aim at Donald Trump, suggesting US restrictions on its business "underestimate our abilities".
Ren Zhengfei was quoted by Chinese state media CCTV as saying the company's battle was with the Trump administration and not US firms – as he defied a crackdown on the business in the world's largest economy.
Restrictions imposed by the US government last Thursday added Huawei and 68 other entities to a blacklist on national security grounds, making it difficult for the Chinese company to buy US-made goods.
The ban meant it was unable to maintain its networks or provide software updates to existing handsets.
Reports suggested Google had reacted by suspending its business with the Chinese firm, undermining Huawei's line-up of smartphones and tablets which run on Android.
There was some temporary relief on Monday when US authorities announced a 90-day licence for Huawei.
The US Commerce Department stressed it was to minimise disruption for its US customers and the firm was still prohibited from buying American parts and components to manufacture new products without a fresh licence.
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Google later confirmed the easing of the restrictions meant Huawei phone owners would be able to continue using Google apps as normal for now.
The US accuses Huawei of being a national security risk as Chinese state law means companies there are obliged to cooperate with information if demanded by security services.
The firm denies any suggestion its networks pose a risk as the race for 5G technology enters a crucial phase – with Huawei at the forefront.