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What do PIN code and PUK code mean and what are they for?

FAQ
PIN- is necessary for protection from non-sanctioned access to your SIM-card. PIN-code is known to you only and should be entered each time when you switch your phone on. Please remember your PIN-code (or let it be a combination of figures well-known to you that you should enter when switching your phone on for the first time). If you failed to enter your correct PIN code 3 times in succession, SIM-card will be blocked. You can unblock your telephone by PUK code only.
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What is a PIN or PUK code?

Welcome to Roam4free.ie - The end of sky high roaming charge...
with all mobile phone SIM cards, PIN and PUK codes are used for your safety. They allow you to access your SIM and protect its use from others. When you receive your Roam4free sim you must enter a PIN code to unlock it before you can use it. PUK codes are provided just in case you enter the incorrect PIN code more than 3 times. If you do, your phone will 'lock' you out for security reasons and only upon entry of your PUK code will it be unlocked for you to enter the correct PIN code.
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banglalink ::
Ans: PIN - Personal Identification Number (PIN is used to guard against unauthorized use of SIM Card.) PUK - Personal Unblocking Key (PUK 1 is used to unblock PIN 1)
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YaketyYak Mobile Phones “ FAQs
PIN stands for Personal Identification Number. A PIN code can be used for security reasons, if you enable PIN protection on your handset, you will need to enter the PIN code each time you switch your mobile on. Each mobile phone network sets the PIN number of their SIM cards to a standard default SIM number as below. You can change this via your handset if you wish.
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What should I do if I lost (forgot) my PIN (PUK) code?

FAQ
If your telephone asks PIN-code and you have forgotten it, you will need PUK code. PUK code is indicated on the card-certificate attached to your SIM-card. If you have lost your card-certificate, please call the network 5+ Service Center. After switching your telephone on, “Enter PIN-code” will be displayed. Enter any PIN-code. After you have entered incorrect PIN-code three times, telephone will ask your PUK-code.
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What is a PIN code?

NJDEP Air Quality Permitting Program (AQPP) - RADIUS
A PIN code is an alpha/numeric character made up of from 4 to 7 characters that a company or consultant creates for themselves. This code becomes your electronic signature when filing an application through RADIUS. The PIN code is case sensitive, therefore always use upper case for any alpha characters.
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What should I do if I lost (forgot) my PIN (PUK) code (for telephones Motorola)?

FAQ
If your telephone asks PIN-code and you have forgotten it, you will need PUK code. PUK code is indicated on the card-certificate attached to your SIM-card. If you have lost your card-certificate, please call the network 5+ Service Center. After switching your telephone on, “Enter PIN-code” will be displayed. Enter any PIN-code. After you have entered incorrect PIN-code three times, “SIM-card. Blocked” will be displayed.
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Can you provide a PIN or PUK code for my SIM card?

Cell, Mobile Phone Unlocking FAQs
Since PIN and PUK codes belong to the actual SIM card, we are unable to provide any support and codes. Although your phone is unlocked, your service and/or subscription may not yet be activated yet. Or your phone may not support an appropriate band standard for the selected operator.
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What is a PUK code?

If you enter the wrong PIN code 3 times in a row, your mobile phone asks you for your PUK code. The PUK (Personal Unblocking Key) code is used to unblock your mobile phone. If you enter the wrong PUK code 10 times in a row, your SIM card will remain definitively blocked. In this case, contact Mobistar customer services.
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To better serve you
PUK stands for Personal Unblocking Code. This acts as a security feature on your mobile. To protect you in the event of theft, the SIM card is immediately locked if someone keys in three different incorrect PIN codes in succession. This also applies if you absent-mindedly enter an incorrect PIN code three times in a row. The message "PIN locked" will appear on the screen. In this event, you can fall back on the PUK code, which comprises eight digits.
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Spacetel Yemen - F.A.Q.
Entering the wrong PIN 3 times consecutively will result in the blocking of your SIM card. To unblock it, you will need your PUK code. Please check contact Spacetelyemen customer care. If you enter the PUK incorrectly 3 times, your SIM card will be deactivated and you will need to visit a Spacetelyemen point of service to replace your SIM card.
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What's a PUK Code?

Untitled Document
A PUK Code is an 8 digit code that a person must use to unblock his phone. A phone is blocked when a person tries to enter a wrong PIN Code several times in a row. However, if this person repeatedly enters one wrong PUK Code after the other, his CHIPPIE SIM-card will be permanently blocked. This means that he can't use his CHIPPIE SIM-card anymore. He must buy a new CHIPPIE SIM-card.
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Where can I find my PIN and PUK codes?

ACN Mobile
You will receive your PIN and PUK codes in your ACN welcome letter. If you have lost your PUK code, you can request it to be emailed to you via DeinACN Mobile. You will only receive an email reminder of your PUK code if you have entered a valid email address in DeinACN Mobile.
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What to do if your PIN or PUK codes get blocked?

banglalink ::
Ans: If customers enter incorrect PIN code 3 times in succession, the SIM card will be blocked. In this situation, customer will need the PUK code to unblock the SIM card. To unblock please follow the following process: enter PUK 1 then press OK > PIN 1 & press OK > PIN 1 & OK. Please remember that PUK 1 is needed for unblocking PIN 1. If anyone enters wrong PUK code TEN times, his/her SIM card will be permanently blocked.
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What are PIN and PUK numbers?

GSM Service-TriBand Roaming FAQs
Some prepaid SIM cards have a security mechanism in place that requires the subscriber to enter in a PIN (personal identification number) code every time the GSM cell phone is turned on. When a PIN code has been assigned it is important not to forget this code. If you enter the PIN code incorrectly into the phone 3 times in a row then your GSM cell phone will display a Blocked message on its LCD. When this occurs you will then be required to unblock your phone using the PUK code.
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Can two people at the same facility have the same PIN code?

NJDEP Air Quality Permitting Program (AQPP) - RADIUS
No. Pin numbers are unique for a facility. A consultant may have the same PIN code under several facility ID numbers, but there has to be responsible person from each of those facilities associated with the consultant’s PIN code.
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My phone says PUK. What does it mean?

Celtel Kenya - Customer Care - FAQs
PUK is an abbreviation for PIN Unblocking Key. Your phone will display this message if a wrong PIN number has been entered more than three times. Take your phone to any Celtel outlet and they will unblock it for you. Click here to find the list. Voicemail is a service that operates automatically when your phone is not answered, out of reach of the signal or switched off. If your phone is not being answered for one of these reasons, Voicemail will automatically ask callers to leave a message.
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I'm being asked for my PUK. What does that mean?

Mobile phone FAQ's with SimplySwitch
PUK stands for 'Pin Unlock Code', and has to be entered if you've locked your SIM by repeatedly entering the wrong PIN code. If you're asked for a PUK code, you've had more goes at guessing your SIM card PIN code than you're allowed. You'll need to phone your network provider Customer Services for your PUK code to unlock the SIM. For security reasons, it's only the network operator that can legally provide you with a PUK code to unlock your SIM.
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Gano iTouchLife Worldwide - FAQ
The PIN Code is an advance security feature available to protect against unauthorized access into your iTransfer Account. The PIN Code is required whenever you wish to utilize the Bonuses and Incentives available in your iTransfer Account such as transfer to other IGR account, purchase of products, withdrawal of Bonuses and Incentives from your iTransfer Account. Please make sure that you do not expose this PIN Code to an unauthorized person.
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To better serve you
A PIN (Personal Identity Number) code is linked to your SIM card. This four-digit code gives you access to the SIM card. Be sure not to forget your PIN code. Do not store your PIN code on your mobile phone. In particular, don't write them on the back of your SIM card!
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