What is my PUK and how do I find out what it is?

For Telstra
https://service.telstra.com.au/general/pinpuk/pukCodeRetrieval.html
go to this website and enter details
For Optus
Get your PUK over phone
have a pen and some paper handy
PREPAID
call 555
enter PUK code into handset
POST PAID OR PREPAID FROM OTHER PHONE
Dial 133 937 from another phone
select option 1
enter mobile number, and 4 digit optus privacy code if known
enter PUK into handset
if you dont know pin, hold line for further options
select technical support option
retrieve PUK code option
enter D.O.B. if requested
after a brief moment, your PUK code will be read out then repeated
enter PUK into handset

Does this help? I have copied and pasted it from the www.att.com Support tab under the Wireless heading. I searched for Obtain PUK code.

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.

For PUK codes, you can attempt 10x to enter the PUK codes in your phone. Once you enter incorrect PUK codes 10x,you'll recieve PUK blocked then what you need is to enter the PUK2. Make sure that you will enter the PUK2 correctly because if you enter incorrect PUK codes 10x,you'll recieve PUK BLOCKED error again. This time,you need to ask your service provider for SIM replacement.

telenor puk code

My Dear:
If For puk & pin cod problem So Please
Very Best Solution:You Go To Service & Sim Office and Get The Puk code And Pin code From Office oprator
Enter The Puk code and Yes
Enter The pin code and Yes
So Puk code Open and Problem will Quickly Solved

PIN blocked.Enter PUK code IMEI :351869043115763 please help me out

1.Try tis below.
» Samsung Unlock Code

2.Or If you enter wrong password for more then 5 times,it ll ask you to enter the puk number....now call your customer care and
get the puk number...enter the puk number in the space given for password....thats it...problem is fixed
If you had locked your mobile then update the formware all saved passwords will be deletedyou enter wrong password for more then 5 times,it ll ask you to enter the puk number....now call your customer care and
get the puk number...enter the puk number in the space given for password....thats it...problem is fixed
If you had locked your mobile then update the formware all saved passwords will be deleted

my phone puk code got locked. i can unlock the puk code but it says enter new pin code. and when i verify it it says code error

HOLD ON!
You may enter wrong PIN three (3) times only. After that your PIN will be blocked! To unblock, you need PUK. You can only enter wrong PUK ten (10) times. (This is as documented) After entering correct PUK, you will be asked for NEW PIN.

So, when it says "PIN blocked. Enter PUK code", you must enter the PUK. If you correctly enter the PUK, it will asked for new PIN, by asking "Enter new PIN code:". Enter anything you want as your PIN. You will be asked to enter it twice (two times).
From what I read from your post, you have done correctly, but you don't want to enter new PIN. There is no way SIM card/phone will use old PIN. The device doesn't know your PIN. So, you have to enter new PIN.