Can't foreign mobile phones receive short messages from domestic mobile phones? How to send text messages?

I wonder where you sent it. Generally 00+ country code+area code+mobile phone number. For example, China is 00+86+ mobile phone number. 86 is the country code of China, because like making a phone call, such as a local fixed telephone, the area code does not need to be added. Generally, 0086 is the default, but it is the same reason that you must add an area code to make a foreign call. If you can't send it yet, call customer service to check whether the international business has been closed for you.