iPhone: About the SIM PIN

Summary

You can lock your SIM card, so that it can’t be used without a Personal Identification Number (PIN). You must enter the PIN each time you turn iPhone off and turn it back on again. Some carriers require a SIM PIN to use iPhone.

Products Affected

iPhone, iPhone Activation in iTunes

You can enable, disable, or change your SIM PIN from Settings > Phone > SIM PIN.

Some carriers provide SIM cards with a default SIM PIN already enabled. Click the link below to see a list of default SIM PINs by carrier. If you don't see your carrier listed below (after clicking "Default SIM PIN codes"), contact your carrier to find out what your default SIM PIN code is.

Default SIM PIN codes

Carrier	Default SIM PIN
Airtel (India)	None
AT&T (US)	1111
Chunghwa Telecom (Taiwan)	0000
Fido (Canada)	3436
Globe (Philippines)	Post-paid: 1234 Pre-paid: Contact carrier
O2 (UK)	0000 or 5555
Orange (France)	0000
Rogers (Canada)	1234
SingTel (Singapore)	1234
Sonera (Finland)	0000
Telia (Denmark)	None
Vodafone (India)	None

 

Personal Unlocking Key (PUK)

If you enter the PIN incorrectly three times, you may need to enter a Personal Unlocking Key (PUK) to enable your SIM card again. Refer to the SIM card documentation or contact your carrier. Important: Entering an incorrect PUK code too many times will result in the SIM becoming permanently locked. If this occurs, you will need to contact your carrier for a replacement SIM card.

Additional Information

When restoring the iPhone software, you will need to unlock the SIM card to complete the restore process. iTunes and the iPhone display the following prompts to notify you:

iPhone	iTunes

 

To complete the restore process:

1. Disconnect the iPhone.
2. Tap Unlock on the iPhone.
3. Enter the SIM PIN to unlock the SIM card.
4. Reconnect the iPhone.

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