Can I send and receive short messages between China and Japan?

Yes, but it can only be used in Japan after the international roaming service is opened. And Japan is a WCDMA country. If the mobile or telecom number needs to be rented in Japan, it can be used directly after the 3G number is opened internationally. If it is sent in China, it will be charged according to the ordinary SMS fee (1 cent or 1 cent). If the other party sends it to you, it's free. No more than 5 yuan. You get information for free. In general, to open an international service, you should first look at whether the number supports it. For example, you can open mobile GSM, Unicom World Wind, and post-paid telecommunications. Opening method, telephone deposit or deposit needs more than 1 1,000 yuan.