Question about LG CU400 Cellular Phone

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First time user

I've just got my first cell phone and I pushed something, not sure what but now my phone says "PUK Blocked" and I can't get it to do anything at all! Please help me!!

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  • 16 Answers

That means someone has entered a wrong PIN code more than 3 times, you need to have your service provider unlock your SIM card for you
Unfortunatly if the code is entered more than 10 times, that SIM card is out of commission, might cost you the $25 dollars for a new card.
Someone might have entered it without you knowledge, keep that in mind...
hope that helps, let me know
Thanks

Posted on Apr 30, 2008

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Posted on Jan 02, 2017

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2 Answers

Can i get my puk id please 5022435292


Tip & How-To about Cell Phones
PUK

A PIN Unlock Key (PUK), also known as a Personal Unblocking Code (PUC) is used to reset a Personal Identification Number (PIN) that has been forgotten or lost.

Most mobile telephones offer the feature of PIN protection. After switching on the phone, if the PIN security function is active, the user is requested to enter a 4-8 digit PIN enabling the phone's non-emergency calling functions. If the wrong PIN is typed in more than three times, either the SIM card, the device, or both become locked. They can be returned to their original unlocked state by entering a PUK, provided by the service operator after verification. If the wrong PUK is entered ten times in a row, the device will become permanently blocked and unrecoverable, requiring a new SIM card. Cellular phone users are therefore advised by most providers to keep their PUK written down in a safe place separate from the device.

The PUK (PUC) is a SIM-specific code assigned by the service provider. It is near-impossible to guess and enter it; thus, if a user does not know his or her PUK and is prompted for it, it should be obtained from the service provider.

Once you enter the PUK code, you must set a PIN. The PUK and PUK2 are used to unlock the PIN and PIN2 codes respectively if your SIM card is blocked.



hope that helps

Jan 02, 2015 | Cell Phones

Tip

What is PUK code. How to get this?


A Pin Unlock Code (PUC) or Pin Unlock Key (PUK) is used in GSM mobile phones and some smartcards to unblock a blocked SIM card.
The basic of PUK code is,
  • SIM cards have their own security
  • on startup SIM cards ask for PIN code (4 digit)
  • If user enters it correctly then its accessible
  • If user enters it incorrectly 3 times (in some 7 times) PIN code is blocked. To stop brute force attempt.
  • Blocked PIN code is unlocked through PUC (Pin Unlock Code) or alternatively called PUK Pin Unlock Key which is 8 digit.
  • If PUK is entered correctly user sets new PIN code and SIM is accessible.
  • If PUK is entered incorrectly 3 times, then SIM is no longer usable or accessible and any data in it is lost.
  • Sim card security is managed by their providers which are usually network companies like vodafone, 3G, Orange and Virgin or T mobile etc... (Whatever is yours like U-Fone, Warid etc....)
  • NO ONE else can give PUK code. YOU HAVE TO ASK YOUR SERVICE PROVIDER/NETWORK for PUK.

on May 16, 2010 | Cell Phones

1 Answer

I want to know my puk number its blocked


u can find ur puk no. on ur network services provider manual. or else if u cannot find it go to ur service provider. but maku sure not to enter wrong puk no.more than 3 times as ur phone may get blocked

Mar 10, 2012 | Cell Phones

2 Answers

I need the puk number for my samsung gallaxy please


You can get the PUK Code from the service provider and Unlock it........

Jul 01, 2011 | Samsung Cell Phones

2 Answers

What is the p.u.k. # for a samsung sgh-t105g IMEI# 356622/04/180178/9


PUK - code kotroy must be granted by the operator when buying a phone connection.Without this code, or ten times you enter an incorrect PUK, your phone will becompletely blocked!

Every time the telephone, you must obtain your PIN-code (4 to 8 digits), except forsituations when you unplug the PIN-code request the appropriate setting your phone.Be careful when typing PIN-code! If the code is typed incorrectly three times in succession, SIM-card is automatically blocked.

To unlock your phone you will need:
- Enter PUK1 and click "OK"
- Enter the new PIN-code and press "OK"
- Press to confirm

To set the code provided 10 attempts. If the 10 times you've dialed is incorrect PUK-code - card is blocked completely, and you have to buy a new SIM-card. Recover PINcodes and PUK-if you have forgotten them - can be turned into a subscription service.You can disable the PIN-code request, but then the protection against unauthorized use of SIM-card will not be provided.

Jul 01, 2011 | Cell Phones

1 Answer

My phone will only allow me to use the emergency call number, It say PUK blocked? Please assist.


A PUK blocked message pops up after one enters the wrong PUK code 7 or 10 times in a row, depending on the service provider. A PUK code is required only after one blocks the SIM PIN code.

Many times, it may so happen that you block your PIN code. You will need to call the customer care of the service provider of your cell phone for the PUK code or refer the SIM certificates for the PUK code. If you enter the wrong PUK code 7 to 10 times in succession, it will lead to PUK blocked. After entering the wrong PUK code 10 times in a row, the SIM card becomes permanently invalid or locked. The only solution is to purchase a new SIM card.

PUK blocked requires you to get a new SIM card. It does not matter whether you use a Nokia Cell Phone, LG Cellphone, Motorola Cell Phone, Samsung or Sony Ericsson handset. The handset is not the one that's deactivated, but its the SIM card that gets blocked. So, contact your network store for further help and getting yourself a new SIM card (new phone number). I hope this article on PUK blocked on cell phone has helped you find the solution to your phone problems.

Apr 06, 2011 | LG Km570 Cell Phone

1 Answer

The sim is blocked


hi there,

SIM card is blocked due to some reasons:
-you`ve inputed wrong PIN numbers three times, the phone usually asks for PUK code - please note that you have 10 times chances input the code until it`s totally blocked by the provider
-it was prepaid service and has passed the expiry date, you should change the SIM card in this case

hope this post will help

Jan 05, 2011 | Nokia Cell Phones

2 Answers

Whats the puk code


A PIN Unlock Code (PUC) or PIN Unlock Key (PUK) is used in GSM mobile phones and some smartcards to unblock a blocked card.

Most mobile telephones offer the feature of personal identification number (PIN) protection. After switching on the phone, if the PIN security function is active, the user is requested to enter a 4-8 digit PIN enabling the phone's non-emergency calling functions. If the wrong PIN is typed in more than three times, either the SIM card, the device or both become locked. They can be reverted to their original unlocked state by entering a PUC (PUK), provided by the service operator through verification. If the wrong PUC (PUK) is entered ten times in a row, the device will become permanently blocked and unrecoverable, requiring a new SIM card. Cellular phone users are therefore advised by most providers to keep their PUC (PUK) written down in a safe place separate from the device.

The PUC (PUK) is a SIM-specific code assigned by the service provider. It is impossible to guess and enter it; thus, if you do not know your PUC (PUK) and are prompted for it, you should get it from your service provider.

Nov 09, 2010 | Nokia C3 Cell Phone

1 Answer

My son was on it and gone on something and now got puk on it i tryed code but unsure if right


please be careful with puk codes. Puk code is asked to you....if you have made three wrong entries to pin/pin2 codes. I asked you to be careful because if wrong puk entries will be made 10 times then your connection will be blocked. To know your puk code you have to call your customer care number saying that your pin is blocked and the phone is asking for puk number. The customer care will do some verification and then they will tell you the puk number.
Hope this will help 4 sure.....

Oct 01, 2010 | Cell Phones

2 Answers

Asking puk code


The puk code is sim card spesific it comes with the sim card when you get it or you can get it by calling your phone service provider of the sim card to get the puk code.
if you have entered the puk code wrong too many times you will make the sim card useless and you will have to contact your phone service provider for a new sim card, it will probably cost.

Aug 14, 2008 | Nokia 6020 Cellular Phone

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