My mobile phone is unique. I need to enter the pin code after the restart. I don't know what to do.

The mobile phone has several passwords. One is the service password, which is generally 6 digits by default, "000000" or the last 6 digits of the mobile phone number, and is used when logging in the website of the service provider to inquire about personal information; One is the password of sim card (pin code and puk code), which is usually 8 digits by default to prevent the loss of mobile phone and telephone charges; There is also a screen lock password (also called pin code) to prevent outsiders from peeking at the contents of the mobile phone screen. Wait a minute.

Be sure to find out what password your mobile phone needs before you can prescribe the right medicine.

1. If the pin code of the SIM card is entered incorrectly for three consecutive times, the SIM card will be locked, and it can only be unlocked by entering the PUK code again. If the PUK code is entered incorrectly 10 times, the SIM card will be locked, and you can only go to the service provider to apply for a new card (it will cost 20 yuan to apply for a new card by electric signal).

This setting of mobile phone SIM card is mainly to protect personal mobile communication business and prevent SIM card from being stolen by others, causing high expenses and unnecessary losses to users.

If you want to know the PIN code and PUK code, you can log in to China Mobile website with your mobile phone number and service password, and automatically enter the webpage of individual customers. Then find "My mobile phone-all categories (just put the mouse on it)-other functions-SIM card information inquiry", in which you can see the PIN1/pin2/puk1/puk2 code of your mobile phone. If it is a telecom card (number), you can log in to China Telecom official website with your mobile phone number and password, and find "Consumer Help Center (in the upper right corner of the screen)-Convenience Service-Convenience Service-Real PUK Code Inquiry-Enter your mobile phone number in the box to display the PUK code". The first is PUK 1 code, and the second is PUK2 code.

Now many SIM cards have PUK codes on big cards.

Second, there are many channels for electronic products to set PIN codes to protect personal information. There are generally two kinds of unlock pin codes: one is the unlock pin code of SIM card to prevent SIM card from being stolen by others and wasting your mobile phone fee; The second is to unlock the PIN code, which can also prevent others from accessing your mobile phone desktop at will and protect your personal information. In addition, there are other security PIN codes, such as the factory reset PIN code, which can prevent your mobile phone from being inadvertently restored to the factory state and losing your personal information, so you will be prompted to enter the PIN when you want to restore it.

Code, in order to play a warning role. These codes can be the same or different. Generally, they are set the same, which is convenient for memory.

3. The default PIN code of the device is generally a four-digit password, and it is "0000" or "1234" or "11"by default. In order to prevent malicious detection from gaining access rights, the device has set the number of input times (generally 3 times by default), after which the device can be locked. The PIN code can also be set by yourself. After setting it up, you must remember that once you forget it, you usually go to after-sales service.

4. Here's a solution to the problem of forgetting to lock the PIN code: press and hold the power-on key+volume plus key at the same time in the shutdown state, find the item "Restore factory settings" in the pop-up dialog box, and enter the recovery. Select Simplified Chinese-Clear Data-Clear User Data and restart to enter the system. But the application software of the mobile phone will remain, but the user data will no longer exist.

note:

Sim card pin has a limited number of times, and can be used indefinitely if entered correctly. Once you enter an error three times in a row, even if you find the correct PIN code, you will get an error if you enter it again. Even if there is no prompt, you should enter the PUK code directly. So be sure to pay attention to the number of times when operating. Don't accidentally enter the wrong PIN code three times, then continue to enter the wrong PIN code ten times, and then burn the card. Other pins generally have no limit on the number of times.