How to call and send messages to Chinese mainland when roaming abroad?

When China telecom users roam abroad, they call Chinese mainland's mobile phone: international access code (00)+ country code (86)+ domestic mobile user number; To call the fixed telephone in Chinese mainland: international access code (00)+ country code (86)+ area code+user number. When sending short messages to domestic users, just fill in the mobile phone number directly at the receiving number. Guizhou users pay attention to China Telecom's customer service in Guizhou. The official account of WeChat can be paid by WeChat, and the phone bill can be recharged with one click. Traffic, points, bills and detailed bills can be operated by themselves, which is convenient and fast. Customer service 34 will answer your questions.