This paper studies the development of China's smartphone industry through data collation and chart analysis. In the context of tense Sino-US relations, all Chinese mobile phones are affected by the Sino-US trade war. Among Chinese local mobile phone brands, Huawei, the only company that can design its chips, has been sanctioned and is most affected by the international situation. It is precise because of the turmoil of Huawei's sanctions and the Chinese government's encouragement of technology

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... ompanies to conduct chip research and development in recent years, other technology companies are investing in their industrial chains, developing their core components, reducing their dependence on the US companies and reducing the impact of being sanctioned. This article predicts that due to the influence of Sino-US relations, the core components of the Chinese smartphone market will still rely on US suppliers in the short term, but in the long run, with the upgrading and improvement of China's industrial chain, this dependence will gradually decrease until the final core components can be produced entirely locally in China.