The SIM lock is a security feature developed to help keep devices on the originally assigned networks. Once the SIM card lock is enabled, you will see the "SIM card is locked" screen whenever you remove the SIM card. This feature, to some extent, can protect your sensitive information from access by anyone else. But in certain situations, you may need to unlock a SIM-locked iPhone. Such situations can be:

  • You want to change the service carrier.
  • You want to remove the phone for sale.
  • You bought a SIM card-locked iPhone.

Whether you belong to the situations listed above, this guide will introduce some feasible ways to instruct you on how to unlock SIM card on iPhone. The unlock steps differ according to your service providers like AT&T, Versio, T-Mobile, Sprint, and more.

SIM Card Unlock iPhone Contents Get it
iPhone Unlocker You can apply the all-in-one software to remove the SIM lock on your iPhone regardless of the service provider. Read More
The Phone App If you've ever set your SIM card to be locked to a PIN, you can use the SIM PIN to get rid of the SIM lock. Read More
Settings You can go to Settings to disable the SIM PIN feature, but you need to enter the PIN first. Read More

Note: You'll have no chance to switch the provider if your device is bought as a bundle, including a phone and pre-paid or post-paid connection. Only when the contract ends, and the service provider shares the SIM Unlock code can you remove the network lock. Before that, you couldn't use any other SIM card on your iPhone.

Method 1. How to Unlock SIM Card on iPhone from Any Carrier

No matter your service provider, this all-in-one iPhone SIM card unlocker - EaseUS MobiUnlock can easily help you unlock iPhone SIM lock. In addition to SIM cards, other iOS locks like screen passcode, Apple ID, Activation Lock, and iTunes backup encryption are also supported for removal. These features can greatly help users who forgot the iPhone passcode or tried to remove their Apple ID without a passcode.

To unlock SIM card on iPhone from any carrier:

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
 

Method 2. How to Unlock SIM Card on iPhone Directly via the Phone App

If you've ever set your SIM card to be locked to a PIN (usually an identification number), then you can use the SIM PIN to remove the SIM lock. If you forgot or didn't know your SIM PIN, you can contact your carrier to help unlock your SIM card using the default SIM PIN or PUK code.

It is worth noting that too many wrong attempts to enter the wrong SIM PIN will cause your device to be permanently locked to your SIM card, so never try to guess a SIM PIN. If you want a way out to unlock your SIM card without a PUK code, you can refer to the following passage: How to Unlock SIM Card WIthout PUK Code.

Now, you can follow these steps to remove the SIM lock on your iPhone via the Phone app.

Step 1. Open the Phone app on your iPhone and get into the Contacts page.

Step 2. Initiate a call, which can be any contact at random.

Step 3. A dialog will return and show you an "Unlock" button. Click it to proceed.

Step 4. Enter your SIM PIN and click on the green button to unlock your SIM card on your iPhone.

Method 3. How to Unlock SIM Card on iPhone via the Settings

Another possible way to unlock SIM card on iPhone is by disabling the SIM PIN. During the process, you might be asked to enter your SIM PIN. You can enter it if you remember. If you're unsure about the SIM PIN, never try guessing it.

If you indeed want to try, just enter the one found in the service document or customer service page, which could be the default SIM PIN.

Now, you can follow these steps to unlock the SIM card on your iPhone via Settings.

Step 1. Open the Settings app on your iPhone.

Step 2. Tap on the Phone option from the list, and then hit "SIM PIN."

Step 3. Turn SIM PIN off.

Turn Off SIM PIN

Quick Tips: You can also change the SIM PIN code on your iPhone. Thus, you can use the new SIM PIN to unlock your SIM card the next time.

The Bottom Line: Solved 'How to Unlock iPhone SIM Lock'

No matter your service carrier, you can find feasible instructions on how to unlock SIM card on iPhone. As you can see, it is easy to remove the SIM card lock on iPhone from any carrier with EaseUS MobiUnlock. If you're not fond of third-party tools, you can try other ways to get the job done.

FAQs About How to Unlock SIM Card on iPhone

After knowing the methods to unlock SIM cards on your iPhone, it's time to learn some additional questions about why my iPhone says SIM locked, can the SIM lock be removed from iPhone, and what is the default SIM PIN. Learning these questions can be helpful in case you face such a problem in the future.

Why does my iPhone say SIM locked?

Your SIM card can be locked when you enter a PIN (personal identification number) three times. When that happens, you'll need to reset your PIN by entering your SIM card's unique unlock key, also called PUK.

Can the SIM lock be removed from iPhone?

YES, the SIM lock can be removed. The instruction to do it varies depending on your phone model and carrier. Generally, you can contact the carrier to help remove the SIM lock.

What is the default SIM PIN?

Usually, the default SIM PIN is 0000.

What is the iPhone PUK code?

The PUK code refers to a personal unlocking key used to unlock a PIN-protected SIM card. Such a code is needed when you enter the wrong PIN over three times.

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Updated by Myra

Myra joined EaseUS in 2017. As a big fan of Apple products, she mainly focuses on iOS data transfer and iOS troubleshooting tips. Meanwhile, she is expanding her knowledge and skills in other fields like data recovery and disk management. Myra is open-minded and likes both extensive and intensive reading. Other than reading and writing, she is also fond of mobile games and K-pop stars.

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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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