Why is SMS not free, but WeChat is charged?

First of all, we should know that the four major operators are monopoly industries in the industry, and the income from SMS is an important part of their income, so the four major operators will not give up this part of their income. Secondly, there is no doubt that the emergence of WeChat has reduced the income of operators. So it is impossible for text messages to be free. Moreover, WeChat charging can reduce the impact of WeChat on operators to a certain extent (everyone charges, and more people will use old brands).

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