Unblock a sim without PUK - Cell Phones

to my knowledge, this cannot happen without someone actually locking the sim, so you may want to contact your employer, but just in case your employer doesn't know whats happening,
here are instructions to find your puk code for att, if you have a different carrier, contact their customer support for further instruction

Obtain a PUK Code

Instructions: When the error message "ENTER PUK CODE" is shown on the screen of the device:

1. Log into myAT&T.
2. Select Wireless from the myAT&T tab at the top of the page.
3. Select Phone/Device.
4. Click Unblock SIM Card.
5. A new page will open, containing the PUK code for your phone. Enter the code on your phone's screen to unblock the SIM and create a new PIN.

Unblock SIM Card

1. Enter the eight-digit PUK code on the phone, then press OK/Yes.
   Note: Some Motorola phone users need to enter **05* if "enter PUK" is not already displayed. After entering **05*, enter the eight-digit PUK code and press OK.
2. Select a new PIN code, then press OK/Yes.
3. Re-enter the PIN code, then press OK/Yes.
4. If the codes were entered successfully, the phone is ready for use.

If the incorrect PUK code is entered 10 times in a row, the SIM card becomes permanently locked and a new SIM card must be purchased. If the device is requesting PUK2, call Customer Care at 800-331-0500.

... good luck

Hello,

PUK code request are mainly for blocked sim cards, if your sim card is blocked is when it requests for the PUK code.

Please read this tips for PUK and know how to unblock your sim card:

http://www.fixya.com/support/r9621231-puk_code_problem

Elect_Comp

Hello,

If your phone comes up with a display requesting for the PUK code, then it means your sim card is already locked and you need to type your unblocking code to get it opened.

The PUK means personal unblocking key. It is found inside the sim pack on the sim carrier where you broke out your sim card from. There are some numbers on it, Your mobile number, your pin code your PUK code which mostly used to be 8 digits and your bar code at the bottom of the sim carrier.

Enter the 8 digit code that is on the sim card carrier, that is your PUK code, then you enter a new password, then it will prompt you to re-enter it, then your sim will be unblocked. Be sure to enter a code that you will find easy to remember, if not the sim will be blocked again and you will be requiring the PUK code to unblock it.

If you do not have the Sim carrier, then you have to contact the service providers customer care so they will give it to you.

Take care and good luck

PUKs, or personal unblocking keys, are used to unblock a mobile phone which becomes blocked. Mobile phones may become blocked when a PIN (personal identification number) is entered incorrectly on three consecutive occasions. In some instances, the phone may become blocked, which requires a PUK to unblock it, and in other instances, the SIM (Subscriber Identity Module) card itself becomes blocked and again will require a PUK to unblock it.Mobile phones are also blocked when they are reported stolen and if there is an outstanding payment on the account.It is important to differentiate between unblocking phones (using a PUK) and unlocking mobile phones (using another type of code). NOTE: It is a criminal offence for anyone to attempt to unblock a mobile phone, other than the network provider who put the block on the phone.If your phone has become blocked by mistake, for example you have entered the PIN incorrectly on three consecutive occasions, then you need to contact the mobile phone network operator with your details. To explain a little more, specific to your mobile phone network, You need to go to your Service providers, web site & navigate your way to the specific PUK details for your mobile phone network operator. Usually you have to Register your phone to get a PUK code.

you don't have to pay for your PUK, that is your pin unblocking key, we usually need this code to unblock the wring typing of pin for 3 consecutive times. PUK is provided to you free of charge, when? the first time you buy the sim, it is written in the back of your sim card holder, together with your mobile number. or written in the receipt. written there were, PIN 1 = 1234 PUK 1 = example only 12345678 PIN 2 = 1234 PUK 2 = 12345678, if you input the pin 1 code wrong 3x, then you need to type PUK 1 which can unblock your pin so you can use your phone. if lost any of that code, ask your network provider to provide you.

take care.

PUKs, or personal unblocking keys, are used to unblock a mobile phone which becomes blocked. Mobile phones may become blocked when a PIN (personal identification number) is entered incorrectly on three consecutive occasions. In some instances, the phone may become blocked, which requires a PUK to unblock it, and in other instances, the SIM (Subscriber Identity Module) card itself becomes blocked and again will require a PUK to unblock it. Mobile phones are also blocked when they are reported stolen and if there is an outstanding payment on the account. It is important to differentiate between unblocking phones (using a PUK) and unlocking mobile phones (using another type of code). More information on unlocking phones will be available here in the very near future. NOTE: It is a criminal offence for anyone to attempt to unblock a mobile phone, other than the network provider who put the block on the phone. If your phone has become blocked by mistake, for example you have entered the PIN incorrectly on three consecutive occasions, then you need to contact the mobile phone network operator with your details. To explain a little more, specific to your mobile phone network, use the links above to navigate your way to the specific PUK details for your mobile phone network operator.

hi,
just call your network operator and provide them with your phone number and sim serial number, which is on the back of your SIM card. then they will provide you with the PUK code.
rate me if it solves your problem