I need a puk code for the lg p-350 optimus - LG GT540 Cell Phone

contact your service providers customer care and ask for your PUK code but make sure you have pen and paper to hand and write it down correctly so ask them to repeat it to make sure as if you enter the PUK code wrong you are only allowed so many attempts after that your SIM is locked .

You need your PUK. Csll your vendor.

If you have the packing from your SIM card, the PUK is on the larger card the SIM was attached to.

PUK is the code that is associated with SIM.(network service provider)
you can have from them.

PUK Code
PUK stands for Personal Unblocking Key. This is a unique eight-digit code specific to your SIM card. This is required when the PIN number to unlock your mobile phone is entered incorrectly 3 times. You are then given 10 attempts to enter your PUK code. If an incorrect PUK code is entered after the 10th attempt, you will block your SIM card permanently and will require a new SIM card from your mobile phone provider.
PUK codes can be obtained through the following ways - The PUK code is in your SIM card documentation Starter Pack. If you do not have this then - Please contact your phone service provider.
Your cell phone service provider can give you the PUK code once you give them your account details and they have confirmed your identity. For details to obtain the PUK code for the SIM card, please click on this link and follow my instructions.
http://www.fixya.com/support/r5705889-puk_code

ur defalt phones codes is 12345 or 00000 u can use it
Default 4 Digit user code: 1234 or 0000
Default 6 Digit Security code: 123456 or 000000

Type *#06# at the mobile screen to know IMEI no of your mobile.
send the IMEI no to me and i will reply you with unlocking code.
IF Problem not Solved So
Please New Software install in the Phone Problem will Solved

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

PUK stands for Personal Unblocking Key. This is a uniqueeight-digit code specific to your SIM card. This is required when the PINnumber to unlock your mobile phone is entered incorrectly 3 times. You are thengiven 10 attempts to enter your PUK code. If an incorrect PUK code is enteredafter the 10th attempt, you will block your SIM card permanently and willrequire a new SIM card from your mobile phone provider.
PUK codes can be obtained through the following ways -The PUK code is in your SIM card documentation Starter Pack.If you do not have this then -Please contact your phone service provider.
Your cell phone service provider can give you the PUK code once you give themyour account details and they have confirmed your identity.For details to obtain the PUK code for the SIM card, pleaseclick on this link and follow my instructions.
http://www.fixya.com/support/r5705889-puk_code

Ask the PUK Code from service provider, ast he PUK lock is secondary lock of SIM after PIN, if u put 3 wrong PIN Number then Service asked for PUK and if you entered 10 Time wrong PUK number then you have lost your SIM as the same is block permanently.

please vote me if found helpful.

PUK stands for Personal Unblocking Key. This is a uniqueeight-digit code specific to your SIM card. This is required when the PIN numberto unlock your mobile phone is entered incorrectly 3 times. You are then given10 attempts to enter your PUK code. If an incorrect PUK code is entered afterthe 10th attempt, you will block your SIM card permanently and will require anew SIM card from your mobile phone provider.
PUK codes can be obtained through the following ways - The PUK code is in your SIM card documentation Starter Pack.If you do not have this then -Please contact your phone service provider.
Your cell phone service provider can give you the PUK code once you give themyour account details and they have confirmed your identity.

PIN Unlock Key, PUK: Is a security feature in place by wireless carriers. A PUK for your device will be random and unique, so you will not find it online.

Fortunately, if you call your wireless carrier, they will give it to you!