Cancel the number and apply for a new number. Because no matter what method is used, this number will bring endless troubles. After all, the mobile phone number is not only used for simple communication in our life, but there are too many places where it is needed. This number is no longer safe. It is suggested to cancel this number and apply for a new one. If it is found that the new mobile phone card has been fraudulently used by others and involves problems such as online loans, measures should be taken as soon as possible to solve them and enhance personal information security awareness.