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I have recently ended my Vodafone contract and when I changed to my new sim the phone prompted me for an PUK unlock code. The phone is definitely locked as the new sim works on another old phone I have.
So I got an unlock code from the Vodafone online system but the code supplied to me doesn't unlock the phone. I have double checked the IMEI number etc.
I have contacted Vodafone a few times and get a slightly different response each time to the issue. The last contact I had with them took my IMEI and contract details and promised to escalated this case to their nucresolutions team. So far I haven't heard back.
I am concerned from many of the other posts about getting a successful resolution so am posting this message in the hope of some assistance from the community.
A PUK is only needed if a person forgets their sim pin securith feature which is a 4 digit pin and then locks out their sim card @lisa39
It has nothing to do with unlocking a phone to all networks however for some reason a phone can ask for it !
With some Samsung phones a MCK Mastercode also known as an unfreeze code is needed as well as the Nuc.
Current Phone > Samsung Note 10+ 5G _256Gb > Model: SM-N976B.
Samsung One Ui 2.0 / Android 10.
Samsung Gear s3 Frontier Watch.