What is the PUK code for Samsung?
A PUK code is a security feature on your sim card that, where you can choose to have your sim request a PIN code when your phone is switched on. If this code is entered incorrectly three times, your sim card will lock itself, and this can only be unlocked using your PUK code.
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Where do you find your PUK code?

Find your PUK on the SIM card pack
If you’ve still got the little pack that the SIM came in, check on the credit-card sized bit of plastic that the SIM snapped out from. The PUK Code is an eight digit number, and is usually printed on the back.
What is the 8 digit PUK code for?
The PUK (Personal Unblocking Key) code is a code consisting of 8 digits. It is used to unblock your SIM card when you entered 3 times a wrong PIN code. A card blocked by the PUK code cannot be unblocked; it cannot be used any further and you have to replace it.

Where can I find my 8 digit SIM PUK code?
The PUK code is an 8 digit number that you were given when you first purchased your SIM card. The PUK code is printed on the SIM packaging.
What if I lost my PUK code?
If you cannot find it, give your mobile network a call, and customer support will be able to give you the PUK code or generate a new one after you have answered some security questions. The network provider is going to ask you to prove your identity.
Can you unlock your SIM without the PUK code?
Can I Unlock Sim Card Without PUK Code iPhone? Whether you have an iPhone or Android device if you do have not your sim card PUK code then there is no other way by which you can unlock it. You can try calling on your telecom operator’s customer care number or official website to get the correct PUK code.
Can I find my PUK code online?
You can try online to find your PUK code as long as you have an online account through your network provider (most offer this service). Log in to your mobile phone account on your computer and look for a PUK code section on your account page. Where this appears will vary among network providers.
What is a PUK code for Android?
PUK stands for personal unlocking key. It is sometimes also called a PUC – personal unblocking code. If you insert the wrong PIN code three times on your Android smartphone, either when starting the device or when trying to change or remove the SIM PIN, your SIM card becomes PUK-locked.