What is the use of the PIN code of the mobile phone card

The PIN code is a security measure to protect the SIM card.

PIN code (PIN1), the full name is Personal Identification NumberIt is the personal identification code of the SIM card. The PIN code of the mobile phone is a security measure to protect the SIM card, to prevent others from stealing the SIM card, if the boot PIN code is enabled, then you have to enter the 4-digit PIN code after each boot.

When entering the PIN code incorrectly three times, the mobile phone will automatically lock the card, and prompt to enter the PUK code to unlock, you need to use the service password to call the operator's customer service**, the customer service will inform the initial PUK code, and the PIN code will be unlocked after entering the PUK code.

In order to ensure that your mobile ** is not stolen after loss, each SIM card can be set with a personal password (PIN), and the SIM card is locked, and it is a four-digit password set by yourself.

Hello! Mobile phone PIN refers to the personal identification number of mobile phones.

Usually the middle few numbers behind the SIM card are composed of several numbers assigned by the system, which play a personal identification role for the mobile phone.

It only represents a personal opinion, don't spray if you don't like it, thank you.

PIN: The personal identification code of the SIM card.

How to set the mobile phone card PIN code.

To check the PIN code of your mobile phone, follow the steps below:Tool: OPPO phone, Android system.

2. Then click on the "My" option in the bottom right corner.

3. Click on the top number on the pop-up page.

4. Then the drop-down menu finds the "PIN code query" option.

5. You can see the PIN code and password on the pop-up page.

The PIN of China Unicom's mobile phone card is used to protect the security of the SIM card, so the initial value of the PIN code is generally 1234.

Tips: 1. When the PIN code is entered incorrectly 3 times, the SIM card will be automatically locked. At this time, you can go through the "China Unicom APP" (My - Settings - Security Center - My PUK Code) or go to the business hall to check the PUK code information, and then enter the PUK code to unlock.

2. There are 10 chances to enter the PUK code, more than 10 times, the SIM card will automatically start the self-destruct program, so that the SIM card is invalid, then only to the business hall to replace the card.

1. First open the iPhone, in the settings page, find it"**"This item is shown in the figure below.

2. Then in the page that opens, pull to the bottom and click on the SIM card PIN, as shown in the figure below.

3. Then in the page that opens, click on this switch.

4. At this time, you need to enter the PIN code, the initial PIN code is 1234, at this time, you should pay attention to the prompt, enter the wrong SIM card three times, it will be locked. After the setting is successful, pay attention to changing the PIN code to another number.

PIN code. For the PIP, the unified initial PIN is 1234, but if the SIM card is enabled.

After powering on, entering the wrong PIN password three times in a row will be locked, and a PUK code is required.

Unlock, customers can go to the business hall for free unlocking, and the unlocked password is still the initial password 1234.

PUK code: is the unlock password of the PIN code, when the mobile phone PIN code is locked, enter the PUK code to unlock, enter the error code ten times in a row, the SIM card will be permanently locked and automatically scrapped.

First, the subject is different.

1. PKU code: It is the PIN unlock code, which is used to unlock the SIM card when the SIM card is entered incorrectly, resulting in the phone being locked.

2. PIN code: It is the personal identification password of the SIM card.

Second, the number of digits is different.

1. PKU code: composed of 8 digits.

2. PIN code: composed of 4 digits, if the boot PIN code is enabled, then enter the PIN code after each boot.

Third, the characteristics are different.

1. PKU code: PUK code only has 10 opportunities to enter, and if the input is wrong 10 times, the SIM card will be permanently locked, that is, scrapped.

2. PIN code: When the PIN code is entered incorrectly three times, the mobile phone will automatically lock the card, and the PIN code is a security measure to protect the SIM card to prevent others from stealing the SIM card.

The PIN code is the personal identification code of the SIM card. The PIN code of the mobile phone is a security measure to protect the SIM card, to prevent others from stealing the SIM card, if the boot PIN code is enabled, then you have to enter the 4-digit PIN code after each boot. Functions of PIN CodePIN 1 is a personal identification number.

It is a storage unit inside the SIM card that is set by the phone. When the machine is turned on, it will ask you to enter the pin1 code, and if you enter the pin1 code incorrectly 3 times, it will lead to the phenomenon of "locked card". At this time, you need to provide the PUK code provided by the operator and enter it on the mobile phone keypad to unlock it.

If you enter the PUK code incorrectly 10 times, the card will be "burned", and you must bring the owner's valid ID to the business hall of the operating network to replace the card. The PIN code functions the PIN 2 code is used when setting the mobile phone billing. If you make three incorrect entries, the phone will need to be unlocked with a PU2 code, and the process is the same as the PIN code and PUK code introduced earlier.

However, these two passwords are related to network billing and the modification of the internal information of the SIM card, so they will not be disclosed, and even if the pin2 password is locked, it will not affect the normal use of the mobile phone. Therefore, the PIN 2 code and the PUK2 code do not have to be bothered with. Expand the information mobile phone PIN code stove is a security measure of the SIM card, to prevent others from stealing your SIM card, when you enter the wrong PIN code three times, the phone will be automatically locked, then you have to use the hidden Luk code to unlock, this PUK code you consult your SIM card service provider, if you enter the wrong PUK code ten times in a row, your mobile phone SIM will be burned card, scrapped.

Of course, you can go to the SIM card service provider, that is, the lobby of China Mobile or China Unicom, and ask them to help you solve it.

PIN 1 code] In order to ensure that your mobile ** is not stolen after loss, each SIM card can be set up with a set of personal password (PIN code), lock the SIM card, and set a four-digit password by yourself; Usually the PIN refers to the stool pin1, which is used to protect the security of the SIM card; The initial PIN code is 1234.

PUK code] PUK code is composed of 8 digits, when the PIN code is entered wrong 3 times and is locked, you can use the PUK code to unlock, a total of 10 opportunities to enter, more than 10 times, the USIM card will automatically start the self-destruct program, so that the SIM card invalidates the trip; You can only re-go to the business hall to replace the card.

SIM card PIN code is a password set by China Mobile or Unicom when producing SIM cards, in order to protect the security of the card. SIM card PIN code is used to protect the security and privacy of the SIM card, when the mobile phone restarts, or after plugging and unplugging the SIM card, you need to enter the most correct SIM card PIN code to use the SIM card's communication function (dialing**, sending and receiving text messages, etc.), when entering three times failed, the SIM card will be locked, and you need to enter the PUK code to unlock, you need to use the service password to call the operator's customer sales delay**, customer service will inform the initial PUK code, After entering the PUK code, the PIN code will be unlocked.

There are 10 chances to enter the PUK code, and after 10 wrong inputs, the SIM card will automatically start the self-destruct program and invalidate the SIM card.

WeChat or Alipay payment has become a consumption habit for many people, but unlike before, it is difficult for others to steal your money even if they pick up your bank card, but now if your mobile phone is lost, others only need to take out the mobile phone card to accept all kinds of verification codes before Bi Neng steals your assets. <>

The mobile phone card PIN forgot to unlock the way as follows:

1. Enter the travel belt setting interface, you must be careful when entering the SIM card PIN, and if you enter the wrong SIM card more than three times, the mobile phone card will be automatically locked.

2. At this time, we need to log in to the China Mobile Pocket Business Hall, enter our own and password, and click the customer service icon in the upper right corner.

4. Enter 10086 on the mobile phone dialing interface, dial ** to the official customer service of China Mobile, inform the correct ID number and mobile phone number, and modify the PIN code.

5. You can also take your mobile phone and identity to the China Mobile business hall and ask customer service to help you modify the PIN code.

What the PIN code does:

The PIN code of the mobile phone is a security measure to protect the SIM card and prevent others from stealing the SIM card.

PIN code is the personal password of the SIM card, which can prevent others from using the SIM card without authorization, when the SIM card is plugged into the mobile phone, the screen will show that the user is required to enter the 4-8 digit PIN code (the initial password of China Mobile and China Unicom is 1234).

Users can change the 4-8 digit password at will, if the user enters the wrong password three times, the phone will display the word enterpukcode or blocked, indicating that the SIM card has been locked. <>

In fact, the full name of PIN code is Personal Identification Number, which is the personal identification password of SIM card.

PIN code is a security measure to protect the SIM card, to prevent others from stealing the SIM card, if the boot PIN code is enabled, then you have to enter the 4 to 8-digit PIN code after each boot.

When the PIN code is entered incorrectly three times in the Stove God core, the mobile phone will self-conceal and move the lock blind early card, and prompt to enter the PUK code to unlock, you need to use the service password to call the operator's customer service**, the customer service will inform the initial PUK code, and the PIN code will be unlocked after entering the PUK code.