Actually the Chinese smart phone market is BY FAR the biggest in the world. Far, far bigger than the US market.
And most of the fastest growing smart phone markets are in Asia and Africa. The US and Europe are mature markets.
“Actually the Chinese smart phone market is BY FAR the biggest in the world.”
Which is mostly irrelevant. A domestic industry selling to a domestic market does not make a country a world economic power. Exporting does.
You’ve also missed the fact that without the trade relationships that China has with the West, that domestic industry will dry up, since they cannot produce all those smart phones without raw materials, that they primarily purchase from the West. I know it’s not widely talked about, but China is not only the world’s largest exporter, they are also the world’s second largest IMPORTER, and almost all of her primary trade partners are Western countries. If she cuts off those relationships, it’s back to the plow for China.