Why is the phone number sent by others unknown?

Hello, the phone number of others is unknown. This kind of phone call is harassment. It is suggested to directly refuse to answer and hang up.

The unknown number you received or the customer service number that looks like a bank was tampered with by criminals using "arbitrary display" software. Now some criminals use this software to change their phone number to "955**" for fraud, usually on the grounds of malicious overdraft of credit cards. They send short messages to you through the changed numbers (such as the official bank number of 955**). If you click these numbers, they will be implanted into the mobile phone Trojan to obtain personal information (such as photos, short messages, address books, online banking information, etc.). ) in the mobile phone.