Don't connect to this phone next time. Don't contact people you don't know easily.

The telephone number is the number set by the telephone management department for the telephone. Generally, it consists of 7-8 digits, with 5-6 digits in the early stage. The designated number set by enterprises, organizations, factories, mines and institutions for internal communication such as fixed telephones or mobile phones is generally 4-8 digits in length. It is also equivalent to the number and name of each mobile phone.