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The Samsung Galaxy Z Flip4
L

New Member

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2 Messages

Tue, Jan 4, 2022 2:13 AM

How do I generate a Master Code Key for Samsung Galaxy S9

I need an MCK, which is a Master Code Key. My Samsung Galaxy S9, which i bought from AT&T,  is locked. I tried to unlock it to switch carriers and the unlock key, which I got from AT&T,  did not work. Now my phone is locked and the message I get is "Enter MCK". I called AT&T 4 times and each time they told me to call Samsung. I called Samsung 4 times and they told me to call AT&T.  Surely SOMEONE from one of these two behemoth companies can help.

ATTHelp

Community Support

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200.4K Messages

9分前

Hello La8418, we're here to help with your Samsung Galaxy S9.

 

Unfortunately, we don't have access to an MCK code for your cell phone, so we're unable to provide you with that information.

 

We do, however, have Device Unlock Codes that are used to complete the unlock process for your cell phone, and begin using the device on a different wireless carrier's network.

 

We also have access to PUK Codes that are used to unlock your AT&T SIM card, if it was locked after three wrong PIN entries.

 

We recommend reaching out to your current wireless carrier, or Samsung Support again for further clarification and assistance.

 

Hope this helps!

 

Thank you for visiting AT&T Community Forums.

 

Carlton, AT&T Community Specialist 

New Member

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2 Messages

9分前

Thanks for nothing. I called Samsung 4 times and each time they instructed me to call ATT. Surely, this has happened before and someone knows what to do. We put a spaceship on Mars, but you can't unlock a phone? Progress.

Constructive

Employee

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29.4K Messages

9分前

Samsung generates and has the code. AT&T does not have it and Samsung won’t supply it to AT&T they never have and never will. 

ATTHelp

Community Support

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200.4K Messages

9分前

Hey there La8418, we want to help!

 

Lets meet in a Direct Message to discuss device unlock. Please check your Direct Message Inbox, which is the chat icon next to the bell icon in the upper right corner of the Forums page.

 

We hope to hear from you!

 

Carlton, AT&T Community Specialist

New Member

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1 Message

7分前

I have an MCK lock on my phone,  I have been dealing with this for about a week now. AT&T  Does not carry this code. Samsung  is sending me To ubreak I fix.They are supposed to do some type of factory software reset To unlock the phone. Hopefully this will work I am going there,  I can let you guys know. this is supposed to be free. 

New Member

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1 Message

2分前

@Wesblue7 , did the factory reset work?

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