The Personal Unlocking Key (PUK) Code is a security measure used in modern SIM cards. Tablets, smartphones, mobile phones, and other devices use these SIM cards. Phones rely on SIM cards for communication and they can be postpaid or prepaid. Enter PUK code." "Enter PUK code". "SIM card locked. Emergency calls only. Please contact Customer Care." A Personal Unlocking Key (PUK) may be used as a way to unlock your SIM card in the event that you accidentally lock yourself out of your phone using the phone's native security features. PUK codes are separate from phone PINs or Passwords. Tap "Set up SIM card lock." Tap "Lock SIM card; Enter your SIM card PIN (Note: The default PIN is 1234) Samsung Galaxy Network Unlock Codes. If you see the "Enter Network Lock Control Key" or "SIM Network Unlock PIN" on the screen. If the message "Unsuccessful" appears, you have tried to enter the unlock code several times. In this case, enter: Virginia Area Codes; Wireless Emergency Alerts; Florida 645 and 305/786 Area Code Overlay; Wisconsin 608/353 Area Code Overlay; Missouri 816/975 Area Code Overlay A device unlock enables your Metro by T-Mobile device to use a non-Metro by T-Mobile SIM card to connect to a different international or domestic network. This may also be known Codes for barring all outgoing international calls. **331*code#. - Activate barr all outgoing international calls. #331*code#. - Deactivate barr all outgoing international calls. *#331*code#. - Check status of barr all outgoing international calls. USSD Codes For Barring all outgoing international calls except home country. **332*code#. The easiest and most common way to unlock your phone is by using a PUK code. What is a PUK code? A PUK code is a 'Personal Unlocking Key' (it is also sometimes referred to as a PUC code: 'Personal Unlocking Code'). It is used to reset the PIN number on a phone if the protective software was triggered to lock the SIM card or handset. The unlock code will be displayed on screen, as well as texted to your device. See next steps below. I Have My Android Unlock Code. Now What? Turn off your phone. Remove your SIM Card and enter a new SIM Card from another carrier. Turn your phone back on. Follow the prompts and enter the unlock code. Restart your phone to complete the unlock Method 1. Unlock a SIM Card on iPhone with PUK Code. If your iPhone is locked with a PUK Code and you do not have the original SIM that came with your iPhone, you can still unlock it without any issue. This will allow you to use any SIM Card or other service provider. Here are the steps on how to unlock your iPhone with a PUK code: Select the PUK Code Inquiry option. Enter the ICCID number of your blocked SIM card. This is the 16-digit number printed on the rear of the SIM card. Once the ICCID number is validated, PUK 1 and PUK 2 codes will appear on your screen. We recommend doing the same as in step 7 above. Get PUK by dialing the SMART helpline number 1. Turn off your phone. 2. Locate your SIM card slot: For most smartphones and Moxee Mobile Hotspot: remove the back panel and battery from your phone and you should see a SIM card slot. For iPhones and some other phones: look for the slide-out SIM tray on the top or side of your phone. Insert the tip of a SIM tray tool or a small paper clip to 1A8fJ.