If you enter your SIM PIN three times incorrectly (the default PIN is 5555) it will lock your SIM card. If you have locked your SIM card, you can unlock your SIM with the help of a Personal Unlocking Key (PUK code). The PUK code is generated by giffgaff and you can request Your PUK Code HERE. Once you have obtained your PUK, please type it on A Personal Unblocking Key (PUK) code is a unique code assigned to a mobile phone's SIM card. It is used to unblock a SIM card that has become locked due to multiple incorrect attempts to enter the SIM card's Personal Identification Number (PIN). When a SIM card is locked due to too many failed attempts to enter the PIN, it becomes unusable 4. Request a PUK Code. If your SIM card is PIN locked and you've entered the wrong PIN multiple times, you will need a PUK (Personal Unblocking Key) code to unlock it. Request the PUK code from Boost Mobile customer service. They will provide you with the code, which you can enter to unlock the SIM card. 5. First of all, the easiest way to obtain your PUK Code is by checking the SIM card package. This is a standard requirement that all carriers must provide to their customers. For reference, the PIN code is a 4-digit code compared to the 8-digit PUK code found below your PIN code. 0000, 1234, 9999, and 7890 are the Zong PUK codes, and *310# is the Zong USSD code used to unlock the SIM card. You can also dial the 111222111 and 310 Zong numbers 24/7 in order to grab your SIM PUK code. The personal unlocking key for Zong Telecommunications refers to the Zong SIM card 8 digit unlock code used to unblock the SIM card. Enable SIM Lock. Open the Settings app on your phone. Scroll down until you find "Security.". Find and tap on "Advanced settings" (all the way at the bottom). Tap on "SIM card lock.". Select your SIM card (if you have a dual-card device). Toggle the "Lock SIM card" option on. Input your default SIM PIN and click "OK.". Follow instructions: Once Qlink Wireless confirms your request, they will provide you with instructions on how to unlock your SIM card. This may involve entering a specific code or following a set of steps on your phone. Restart your phone: After completing the unlocking process, restart your phone. This will ensure that the changes take effect The PUK is unique to your SIM card. To get the code, you need to either: Contact us online or with another phone. For your security, you must be the account holder or authorized user to verify. Use the PUK Code printed on the card your SIM came in. Make sure the SIM card number matches the card. Once you have the PUK code, follow the unlock Entering PUK codes. Contact Customer Care to request your PUK code. Entering the wrong code can permanently damage your SIM card. When prompted on the Dialer screen, tap Unlock. Enter the PUK code and tap OK. Enter a new PIN code and tap OK. Re-enter the new PIN code and tap OK. Wait for the device to finish unlocking. To retrieve your PUK number, simply dial 123 8# on your MTN line. You'll be prompted to enter your MTN number. After that, your PUK number will be displayed on your screen. It's important to have your MTN SIM card with you when dialing this number, as it's a requirement for the process to be successful. ziWps.