Huawei is a Chinese and Donald Trump does not like them. He has banned the company It has caused the ban of Huawei's 5G tech in many countries and as many know.
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Huawei is the biggest telecommunications company in the world and it has its tech all over the world. It had never had a single data breach of its users in its history and even if it is linked to China, China doesn't have control over its user's, Huawei has stated that privacy has been maintained.