The PUK (Personal Unblocking Key) is a unique code specific to your SIM card and is required when the PIN code is entered incorrectly three times on your mobile. You're then given 10 attempts to enter your PUK. If an incorrect PUK code is entered after the 10th attempt, your SIM card will be permanently blocked and you'll require a new SIM card.
Your PUK code can be obtained online at My Vodafone. Once you've logged in, navigate to the My Vodafone menu (top of screen) and select 'My Phone Setup' then 'Settings Summary'. You'll find your PUK code under the heading of Mobile Information.
Or by calling 1555 and say 'PUK' code, Lara will then assist you just simply follow the prompts
If you're unable to view your PUK code online please contact Vodafone Customer Care on 1300 650 410. Be sure to have your mobile phone number and enquiry Pin details ready. If you are calling from overseas please contact our Overseas support line on +61 414 14 14 14