Why does the phone display the number instead of the name? And there is no +86 before the number.

This problem is because of your phone book identification problem. When the mobile phone leaves the factory, there are some number settings. For example, if you save a fixed telephone without an area code, when you are called, some telephones only have numbers without names. This problem needs to be solved by contacting the mobile phone manufacturer. Of course, if your mobile phone is only mobile, there are many softwares that can solve it, such as incoming calls. . Your message will be prefixed with +86 or similar before the sender you receive. Give it a try.