Domestic Unicom users do not need any opening procedures, just fill in the sending number in the format of 00+ country code+user number, and they can send short messages to foreign mobile phones. For example, when a Unicom user sends an international short message to a mobile phone user in the United States, the American country code "00 1" should be added before receiving the number. Similarly, foreign users can send it to China Unicom, fill in the international code 0086+ China user number, and it can be sent to China Unicom's mobile phone users.
Charge: 0.8 yuan/article, free of charge. What others send you is charged according to domestic standards! Of course not. For your classmates, wherever you roam. Are the same as ordinary Unicom users. It is impossible to increase the communication cost of others because you roam. This is definitely unreasonable. You can wrap it up if you like. This 30 yuan seems to have 18 yuan. You can consult. The area code of Macau is 00853.