→ Access for You: Registration - Find out how to register for our Access for You service. → Want to chat with other fellow-minded members?Head to our Off-topic section for some interesting chit-chat. → Check out our Priority board for tickets & offers updates, and to discuss all things Priority-related! → Welcome to O2! - New to O2? Find out all you need to know to get started! If you enter your PIN three times incorrectly it will lock your SIM card. You can unlock your device with the help of a Personal Unlocking Key (PUK code). The PUK code is generated by giffgaff, and you can ask for it on the PUK Retrieval Page. Get my PUK. Related articles. What's the default PIN for my giffgaff SIM? What's the default PIN2 O2 PUKs, or personal unblocking keys, can be obtained by phoning O2 on 0870 241 0202 (or 202 from your O2 phone) or by visiting the O2 website. The PUK can be used to unblock a mobile phone which has become blocked. Mobile phones may become blocked when a PIN (personal identification number) is entered incorrectly on three consecutive occasions. Enter the code in your mobile to unlock it. Through SMS: Through another Airtel number, type your (locked) mobile number and send it to 785. Type PUK-Space-15-digit SIM and send it to 121. You will receive an SMS with an 8- digit unlocking code. Enter the code in your mobile to unlock it. Give your PAC Code to O2 (o2.co.uk) or call 202 from your O2 Pay Monthly handset, 4445 from your O2 Pay As You Go handset from another phone: 0344 8090202 (Pay Monthly), 0344 8090222 PAYG). See full contact details. Give your PAC Code to Sky (sky.com) or call 03300 412 524 from your Sky handset / 03300 412 524 from another phone. What you need to do is contact your service provider e.g orange o2 vodafone, and ask them for your puk code then they will give it to you, you then give it to your new service provider and they transfer your number for you. source: I need my puk code for my lebara sim card? Was this answer helpful? Yes | No. Comment. If you provide your PAC code anytime after Thursday Evening, the earliest the port can happen is Tuesday, and will only happen once your new sim is active. So you can request it now and barring any issues then it will happen Tuesday, you will only know once o2 confirm by text the switch date.-- Find the best way to get in touch. We won't charge you to keep your number when you switch to O2. Just request a PAC (Porting Authorisation Code) from your current network, simply give it to us within 30 days. To keep your O2 mobile phone number when switching to another mobile phone network, use our handy tool to obtain your O2 PAC Code. Just select your current and new mobile phone network, click OK and you will receive full instructions for obtaining your O2 PAC code. . Transferring your O2 mobile phone number has never been easier - one free text Solved: How do I find my puk code I've tried to unlock it by using my number but it said it's incorrect. This website uses cookies. By clicking Accept, you consent to the use of cookies. I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. DlEY.