Huawei founder Ren Zhengfei has remained defiant towards the US moves against his company, saying the US "underestimates" its abilities.
Speaking to Chinese state media, Mr. Ren downplayed the impact of recent US curbs and said no-one could catch up to its 5G technology in the near future.
The restrictions being placed on Huawei's access to the Android operating system will cast a long shadow over Tuesday's launch of the Chinese company's latest handsets.
The firm has invited press from across the globe to London to witness the unveiling of its Honor 20 Series smartphones.
The BBC understands the devices will still offer the full Android experience - including use of Google's own app store.
China has threatened to retaliate against US sanctions seen as an attempt to restrict international trade by the Chinese technology giant Huawei.Foreign Ministry spokesman Lu Kang said Beijing opposed countries imposing unilateral sanctions on Chinese companies and would take action.
Iran's Foreign Minister Mohammad Javad Zarif has dismissed US President Donald Trump's "genocidal taunts" and warned him not to threaten the country.
Amid rising tensions, Mr Trump tweeted on Sunday: "If Iran wants to fight, that will be the official end of Iran."
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