What should I do if my mobile phone card is locked?

If it means that the SIM card lock is turned on, go to Settings--Security/Security and Privacy--(More security settings)--Set SIM card lock--Turn on "Lock SIM card"--Enter PIN Password (default: 1234), you need to enter the PIN code every time you turn on the phone after turning it on.

(For some models, go to settings--(more settings)--security--set SIM card lock--turn on "Lock SIM card")

If the PIN If you enter the wrong code three times, the card will be automatically locked, which can effectively prevent others from using the card to change mobile phones, receive text messages, or change passwords for Alipay, WeChat, etc.

If the SIM card is locked, it can be unlocked through the PUK code (please consult the SIM card operator for the PUK code); if you enter the wrong PUK code 10 times in a row, the SIM card will be permanently locked and cannot be unlocked. At this time, the SIM card needs to be replaced.

The customer service contact information of China’s four major operators is as follows:

China Mobile: 10086

China Unicom: 10010

China Telecom: 10000

China Radio and Television: 10099