puk code says not allowed

[jdee]

Im trying to unlock an old nokia phone C3-01 it has a pin 2 code but when I entered the puk it said not allowed

[Cleoriff]

@jdee 

If you want to UNLOCK a phone then use the info in this guide

Guide: Unlocking an O2 phone to use a different SIM card 

[MI5]

@jdee 

Default PIN 2 code is 5555

[jdee]

Hello and thanks, I tried the code 5555 and I got the same message "not allowed"

 I received my unlock code from 02 I entered the number and got a message saying unable to undo restriction so I looked further online and it mentioned that you need a pin 2 code if youve put the unlock code in to many times,  02 sent me a PUk number which said not allowed. Is the PUK number different from the pin 2 code.The mobile is a replacement sent to me by 02 years ago to replace a faulty phone. 

[MI5]

@jdee 

PIN 2 and PUK are both related to your sim and not your phone, so a replacement phone makes no difference at all.

Something else is wrong or you need a different code.

[jdee]

Hello I have an old C3-01 phone I'm trying to unlock, I recieved the phone from 02 as a refurbished replacement for a phone that had a technical problem, I contacted 02 years ago for a unlock code it didn't work just came up with the message "unable to unrestrict" so I put it away and just recently decided to try again, I got in contact with 02 and again tried the code they sent me, I got the same message "unable to unrestrict" can anyone help me with what to do next?   

[Cleoriff]

@jdee 
Did you follow this advice?

Guide: Unlocking an O2 phone to use a different SIM card 

Have you tried another network sim in the phone to check if it's actually locked?

[jdee]

Yeah I tried a sim from sky and a message appeared saying "restricted" and a "undo" message,  where I then entered the unlock code and it said "can't undo restriction"

[jdee]

I think the problem I have is the unlock code was been put in too many times and its locked I was just wonerding if I can do anything to rectify this? 

[Cleoriff]

@jdee 

It's probably hardlocked now. You may need the MCK code. Only our managers can help with that  and they aren't on until Monday. I will tag them to the thread. @Martin-O2 @LukasB @TheresaV