How to send short messages to friends abroad? Do I need to open international authority to send text messages?

When sending a short message to a foreign friend, after editing the content of the short message, enter: international code (00)+ country code+customer's mobile phone number at the sending number, and then send it to complete the short message sending. You don't need to open international authority to send international short messages. "Customer service 95 answers for you. The traffic supermarket has a complete range of goods, and you can freely choose traffic packages, packages, voice packages and holiday traffic packages according to your needs; The official account of China Telecom's customer service WeChat in Guizhou replied that the keyword "flow supermarket" can be handled directly, which is convenient and fast.