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This How.com.vn teaches you how to change the 4-digit PIN that locks your iPhone’s SIM card. Locking your SIM prevents others from making calls and using data on your iPhone.
Steps
Open your iPhone’s Settings. It’s the app on your home screen that has a gray gear icon.
Tap Cellular or Mobile Data. The option you see varies by region and model, but you'll see one of these in the first group of settings.[1]
Tap SIM PIN. Depending on the size of your screen, you may have to scroll down to see it.
Tap Change PIN. As long as a SIM PIN is active, this option will be available.- If the option is grayed-out, tap the "SIM PIN" switch to toggle the feature on. You will typically be asked to enter a PIN to lock the phone—if you never set up a SIM PIN, don't try to guess it! You'll need to use your carrier's default PIN—keep reading to learn how.
Enter the current PIN. If you’ve never created a 4-digit SIM PIN, use your carrier’s default PIN. You will need to get this PIN from your carrier—do not try to guess it. If you guess incorrectly 3 times, your SIM will lock and you won't be able to use it.
Tap Done. It's at the top-right corner.
Enter a new 4-digit PIN. Make sure to choose something you won't forget.
Tap Done. It's at the top-right corner.
Re-enter the new PIN. You will need to enter the same PIN twice to confirm.
Tap Done. It's at the top-right. Your SIM card is now protected by the new PIN.Advertisement
Community Q&A
- QuestionIs there a phone that does not have SIM?
MinoriteCommunity AnswerEach phone has a SIM tray or at least an option for eSIM. You can use any phone without a SIM card, but it will work as a tablet.
Tips
- If you accidentally lock your SIM trying to figure out the current PIN, contact your carrier for a PUK (Personal Unlocking Key).[4]Thanks
- A SIM PIN does not lock your iPhone’s screen. See How to Set a Passcode on an iPhone to learn how to lock your screen.Thanks
References
About this article
1.Open Settings.
2.Tap Cellular or Mobile data.
3.Tap SIM PIN.
4.Tap Change PIN.
5.Enter the current PIN or default provider PIN.
6.Tap Done.
7.Create a new PIN.
Is this article up to date?
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