When you buy a SIM card, you will get a piece of plastic with detailed information about the carrier, which includes the PIN and PUK codes. The PIN is short for Personal Identification Number, which is needed for accessing the operator's mobile network. The first time you insert your SIM card into your iPhone, you'll need to enter the PIN code. 

You can continue to use or disable the code or change it as you want. If you continue using it, you'll need to enter that code whenever you restart your device or remove your SIM card. That makes it easy to forget the PIN code because we rarely need to restart our device or change the SIM card. 

You will be locked to your SIM card if you enter the wrong PIN code three times. To unlock your SIM card, the PUK comes to help. But most people tend to discard the plastic after entering the SIM card. So the problem comes: how to unlock the SIM card without a PUK code?

Method 1. Unlock the SIM Card Without a PUK Code by Calling Customer Service

The first method you can try is to contact customer service, who will provide you with all the information linked to your SIM card. But first, you'll need to provide personal information like your name and address to prove that you own the SIM card. 

Method 2. Unlock the SIM Card Without a PUK Code via the Carrier's Website

You can also get the PUK code via your mobile carrier's website if you have the account (most mobile carriers offer their users an online account). All you need is to open your mobile carrier's official website and sign in with your credentials, and then you will see the PUK code under your profile. 

Method 3. All-in-One Way to Unlock the SIM Card Without a PUK Code

If neither of the above ways helps to unlock the SIM card, then you can try EaseUS MobiUnlock, an iPhone unlocker that helps to unlock the SIM card, Activation Lock, Apple ID, Screen Time passcode, and more. Whether you remember your PIN or PUK code, this iPhone unlocking program can help you easily remove the SIM card.

Additionally, this iPhone unlocker is also helpful when you:

To unlock the SIM card without a PUK code:

Step 1. Connect your iPhone to the computer and run EaseUS MobiUnlock. Select "Remove SIM Lock" from the home-page. 

Remove SIM card - Step 1

Step 2. Check your device's infromation displayed on the screen, and then click "Start." After that, you'll see our Terms of Use, click "I Agree" and then click "Start" again to proceed. 

Remove SIM card - Step 2

Step 3. Then, you'll need to confirm your device information and click "Start Unlocking" to strat the unlocking process. Wait until the process is completed. 

Remove SIM card - Step 3

Step 4. Once the SIM card is unlocked, you can disconnect your iPhone and go to check whether it is SIM lock removed. 

Remove SIM card - Step 4

The Final Words

Now, you know how to unlock a SIM card without a PUK code. As you can see, unlocking a SIM card without a PUK code is not difficult. You can either do it by getting a PUK code via customer service or the carriers' websites. If you can't get that code, try using the iPhone unlocker - EaseUS MobiUnlock. 

FAQs About SIM Card 

Do you want to learn more about SIM cards or PUK codes? If you do, the following questions and answers might be helpful. 

Can I get the PUK code online?

Yes, you can. You can get the PUK code by going to your carrier's website. Most mobile carriers offer their users an online account. If you don't have one, you can call customer service to ask them to provide you with one.

Is the PUK code written on the SIM card?

Usually, the PUK code is written on the plastic that packs your SIM card.

What is the 8-digit SIM PUK code?

The PUK code is short for Personal Unblocking Key code, which is used to unblock your SIM card when you enter a wrong PIN code three times.

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Updated by Jean

Jean has been working as a professional website editor for quite a long time. Her articles focus on topics of computer backup, data security tips, data recovery, and disk partitioning. Also, she writes many guides and tutorials on PC hardware & software troubleshooting. She keeps two lovely parrots and likes making vlogs of pets. With experience in video recording and video editing, she starts writing blogs on multimedia topics now.

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Written by Sofia Albert

Sofia has been involved with tech ever since she joined the EaseUS editor team in March 2011 and now she is a senior website editor. She is good at solving various iPhone and Android issues, such as iPhone or Android data transfer & recovery.

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