Samsung S6 "SIM network PIN blocked. Enter SIM network PUK"

[NeilHepworth]

I see lots of people having the same problem as me and just wondering how best to get the phone MCK/Defreeze code?

The problem arose when I transferred my S6 to my daughter who is not on Vodafone, when we entered her SIM it requested a SIM network pin, not knowing what this was I tried various pins and eventually managed to lock that dialog and now get

"SIM network PIN blocked. Enter SIM network PUK"

Eventually figured out that the original prompt was for a network unlock code but too late as phone know locked and needs what prompt calls "SIM network PUK" which is very unfortunate as each time you phone customer services they either

1. Suggest you enter the NUC - which you cant because that option is now blocked by the earlier mistakes.
2. Tell me to contact the SIM provider as the SIM is blocked and needs a PUK to unlock it - which isnt true as SIM works fine in other phones - I have tried and it doesnt work - suspect just poor terminology  by Samsung would have been better not to request SIM network PUK when they really want the MCK/Defreeze/Master Control Key

Anyhow, now I know I need to enter the MCK/DEFREEZE code first and then enter the NUC.  But obtaining the MVK seems to be causing me and other posters problems.  What is the best way to do this, customer services told me to go to a shop (see this doesnt work for most people), contact customer services (dont know what the error is about), use nucresolutions (10 days and still waiting for their response),  only reliable way seem to be getting it unlocked by 3rd party provider but dont see why Vodafone cant sort quickly!

Any thoughts on who best to contact/phrasing to use to get them to supply this code?

Cheers

Neil

[AnnS]

Hi @NeilHepworth

You need the Vodafone PUK code for the number originally used with the phone, the code is obtainable by contacting Customer Services or using live chat.

When you have access to the phone, to prevent it locking again, it might be an idea to factory reset the phone before using the NUC provided by completing the form below.

Unlock Phone

[NeilHepworth]

Thanks Ann.  Phone is only locked to none vodafone SIMs, ie. phone will not allow access to other SIM networks and works fine with my Voda SIM.

[Mark]

@NeilHepworth I'm sorry to hear you're having problems unlocking your phone. So we can help you further, please contact us via the link in the Private message I've sent.

[NeilHepworth]

Thanks Mark - filled in the form as requested - looking forward to your reponse.

Cheers

Neil

[NeilHepworth]

Dont know if you helped things along Mark, many thanks if so.

For others, do persist with the Vodafone support team and nucresolutions eventually they will sort you out.  It has taken me just over a month in total to resolve!  Firstly I got the NUC code from nucresolutions, unfortunately I had already blocked the NUC entry dialog by entering the wrong code too many times.

Not sure what the official name is so requested then requested the 'DEFREEZE/MCK/Master reset code',   Maybe with Mark's involvement they passed the request onto Samsung 15 days later.  And finally after another 6 days a code came back via nucresolutions.

To use it, put the non vodafone SIM in, switch on 

• at the "SIM network PIN blocked. Enter SIM network PUK" message enter your DEFREEZE/MCK code, that reomve the lock and NUC entry
• you are back at the prompt for "Enter SIM network PIN", you can now type in your NUC and hey presto the phone is no longer network lock 🙂

Hope this helps you get your phone network unlocked a little more promptly than me!

[Israr786]

I have spent hours with their online chat discussing this but had not luck.

I've emailed NUC Resolutions, but they dont understand either.

I've replied a few times and now waiting for a new reply.

Hopefully they finally get it and do something to help.

[Tash]

I'm sorry to hear that we weren't able to resolve this for you when you spoke with us on Live Chat previously @Israr786.

Should you need any further assistance with your code, please follow the details provided in the private message I've sent to you. A member of our team will then be in touch.

[Kmc23w]

Thanks Neil, the issue you had is exactly the same as mine albeit it was my own numerical dyslexia and ineptitude that saw me enter a perfectly good NUC incorrectly 3 times!!!

I must admit I thought I was going mad with the block terminology so I am grateful that you deciphered SIMnetworkPUK to actually mean the MCK. I was getting there but you clinched it.

I shall now ask Voda if they would be so kind to source the code for me, but really grateful for the pain curve you endured that has made my task easier, nice one.

Can one of the Voda mods contact me so I can start the process of getting the MCK for my phone, thanks in advance.

[Tash]

@Kmc23w I've responded to your other post.

[Cmh1990]

Hi

[Cmh1990]

Hi can you help sort mine out please having exactly the same problem and every time I ask customer service or the so called dedicated team the get stuck in a loop telling me I  need a NUC which I already have and won't Provide the in freeze key I need it a getting very frustrating now 

[Gemma]

@Cmh1990 - I can imagine this being frustrating and I’m sorry that you’ve had to contact us so many times. We can escalate it to our Network unlock team.

They’ll then contact Samsung and help to get it sorted. So that we can take your details, please follow the steps in this private message.

[jimbo160278]

Hi Gemma,

I'm having the same problem with my S7, i cannot get anywhere with the call center as they constantly tell me to contact other carriers for PUK codes i don't need.  I've tried emailing the nuc team but my emails get returned undelivered 27 hours later, could you possibly help with getting me a master code please?

Thanks Jim

[Josh]

@jimbo160278 We'd love to help look into this for you and get the code you need. Please send us your details over following the steps detailed in this private message.

[Stephen007]

Hi there mods, I have exactly the same issue as discussed in this thread.

Therefore, I now require the MCK/Defreeze/Master Control Key code to unlock my Samsung Galaxy S7 Edge.

My contract is fully paid up and I'd like to be able to use this phone with my new network provider.

I have tried phoning a few times to no avail which is frustrating. BTW, I aleady have the NUC code.

If you could help me to obtain this code I'd be most grateful. Cheers.

[Magdalena123]

Hi there! 

I've got exactly the same stuggle here and looks like the DEFREEZE/MCK code is my last hope!

Neil, thanks for prompt explanation!

Vodafone team,

Can you please assist further? 

P.S. I do have the unlock code!

[MarkF]

@Stephen007 @Magdalena123 It's disappointing to hear you're having some issues getting your phone unlocked.

It's good to know both of you already have your NUC's. 

So we can investigate further, I've sent you both a private message with details on how to get in touch. Please complete the form enclosed and one of the team will be in contact. 

[Mich2177]

Hi ,

Unsure I'm posting in right section , but I'm having the exact issues mentioned in the above posts.

It's been roughly 38 days since I've been in contact with vodafone through NUC emails .

I've received my NUC code put cannot access this due to needing the MASTER CODE I've contacted vodafone through numerous emails requiring this code with no success .

I'm hopeful you guys can help me out .

Regards,

Michael 

[Adam]

Hi @Mich2177 I'm sorry to see this has been going on for as long as it has. We're more than happy to help. Please send us your details via the private message I've sent you.