Excuse me, if I go to the Russian border, can I send a text message or call a mobile phone user in Beijing? What's the tariff?

I don't think so. Because a friend is in Russia, I consulted a mobile company. The answer is that you can't send short messages to China mobile phones from Russia, but the other party can receive short messages from domestic mobile phones, and the tariff is 1 yuan/article.

Explanation: I mean using a Russian mobile phone. If you use a mobile phone in China, you need an international long-distance service.