
You might be asked for the SIM card code from its packaging too.You won't be able to get the PUK code if you can't prove that you own the phone.
Sometimes, this entails providing your date of birth and address.
The network provider is going to ask you to prove your identity. If you cannot find it, give your mobile network a call, and customer support will be able to give you the PUK code or generate a new one after you have answered some security questions. Sometimes the network will give you this when you first get the SIM card, but not all networks do this. The PUK code is unique to your SIM card, so you can only get this from your mobile network/carrier network. Then, your phone will become locked, and you will need the PUK code to unlock it.
You will need the PUK code if you have set a SIM Card lock and entered the wrong passcode three times. A PUK code stands for "Personal Unlock Key." It's a unique code linked to your mobile phone's SIM card and is usually 4-8 digits long.