Shortly after Huawei was blacklisted by the US government, Google announced that it was revoking the company's access to its Android service. Bloomberg reported that Google had cut off supply to hardware as well as software.
The news was a huge blow to Huawei, as all of its phones a run on Google's Android operating system. It means millions of Huawei customers could lose access to security updates and suffer other disruption.
Read more: Google dramatically severed ties with Huawei — here's what that means for you
After the Department of Commerce granted Huawei a 90-day reprieve before the ban fully kicks in, Google said it had put its Android suspension on hold. But at the moment, this is simply delaying the inevitable.
Huawei has been working on building its own operating system as a "plan B" for years, and although little is known about it, an executive told CNBC it can be ready for China by fall of this year, and the rest of the world in Q1 or Q2 of 2020.
Key US chip making companies such as Qualcomm were quick to act. Three days after Huawei was blacklisted, Bloomberg reported that Qualcomm had told its employees it wouldn't be supplying Huawei until further notice.
Intel was another big name on the list of American chipmakers to cut Huawei off, although according to Bloomberg Huawei has stockpiled at least three months' worth of chips and other components in anticipation of a ban.
US mobile phone parts maker Lumentum also announced it had stopped shipping parts to Huawei, which it said made up 18% of total revenue in its last quarter.
Japanese tech behemoth Panasonic announced on Thursday it had cut ties with Huawei. "We've stopped all business transactions with Huawei and its 68 group companies ... that are subject to the US government ban," a spokesman told the Guardian.
UK chip designer ARM issued a memo to employees telling them to stop "all active contracts, support entitlements, and any pending engagements" with Huawei, the BBC reports. The memo said that its designs contain "US-origin technology."
ARM licenses its technology rather than manufacturing chips itself. The Economist's Hal Hodson pointed out on Twitter that companies typically buy up licenses from ARM several years in advance, meaning it's possible that Huawei has two to three years' worth of licenses stored up.
The UK's largest mobile carrier Vodafone announced on Wednesday that it was dropping Huawei handsets from its 5G launch, which is due on July 3.
"We are pausing preorders for the Huawei Mate 20 X (5G) in the UK," a spokesman told the Guardian. "This is a temporary measure while uncertainty exists regarding new Huawei 5G devices. We will keep this situation under review."
British mobile carrier EE joined Vodafone in excluding Vodafone from its 5G plans, which are due to launch on May 30.
EE told The Guardian it took the decision to can Huawei's 5G phones following Google's withdrawal of Android.
Microsoft has yet to make any official statement on its current relationship with Huawei, but Huawei's MateBook laptops disappeared from Microsoft's online store the weekend after Trump's executive order.
Microsoft declined to comment when contacted by Business Insider.
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