SIM Card

SIM card and mobile phone number are also very important basic identities in many cases, just like email. In recent years, the major operators in our country have done a very good job in the security protection of mobile phone numbers. For example, there are strict security protocols & verification processes for canceling and re-issuing SIM cards, and they all happen on site.

But an attacker can still obtain the target user's privacy information through social engineering and other techniques and deception (or you just lost your phone).

In this case, enable the SIM card password (PIN) so that every time you turn on the phone or use the SIM card in a new device, you will have to enter the correct password.