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Blog - Samsung USA Troubleshooting

Blog - Samsung USA Troubleshooting

 This guide is for Galaxy Phones only

 

Explanation of the codes you may get for samsung

 

NCK - Network control Key

SPCK - Service provider control key

MCK - Master Control Key  ( Same  Defreeze/Unfreeze codes)

 

For USA models, in case if you get  NCK and Defreeze and NCK code is not unlocking the phone, do this:

1.Restart the phone with unaccepted sim card.

2. Once the phone ask for Network Unlock Pin type the DEFREEZE/UNFREEZE  code you got and click Unlock

3. The phone may say Network unlock Unsuccessfull (dont worry)

4. Right away type the Network Unlock code (NCK) again and click  Unlock again.

5. The phone will be unlocked.

_________________________________________________

 

In case if you get NCK code only for some USA models and it does not work check this:

 

Solution for "Network Unlock Unsuccessful" or "Code Error"
 
"Code Error", "Network unlock unsuccessful", "Service Provider unlock unsuccessful" What do I do?
 
 

Solution #1 (Please find your appropriate model)

 

Samsung Galaxy  S3, Note 2, i437, i537, i547 Rugby Pro, S4 Active 4.2.2

1. Please power on the device with a non accepted SIM card inserted, make sure the phone prompts for a SIM network unlock PIN

2. When asked for the SIM network unlock PIN, please select dismiss and follow the steps below :

a. Go to the Dial pad and dial *#197328640# 

b. Please click on number [1] UMTS > [1] Debugging screen > [8] Phone Control > [6] NETWORK LOCK

c. You will see 3 options

d. Please click on number [1] Perso Sha256 INFO, the screen will change slightly

NOTE: If you see ENABLE_FLAG[1], contact us. If you see ENABLE_FLAG[0], continue on.

e. Please hit the MENU button then when the menu pops up please carefully hit BACK to return to the previous screen

f. Please click on number [2] Perso Sha256 ON, the screen will change again to a one line message

NOTE: If you see ENABLE_FLAG[1], contact us. If you see ENABLE_FLAG[0], continue on.

g. Restart the phone on the screen by holding the power button and click RESTART

h. When the phone prompts for the unlock code simply enter the unlock code

i. Your phone is now permanently unlocked!

 

T599 Mobilicity ,T599N Metro PCS

Use provider code or subprovider code

 
T999L, Galaxy Ace, All Canada S2, All Canada Note 1
 
1. Make sure that the phone PROMPTS for the code with a NON accepted sim card and that your IMEI is correct by dialing *#06#
 
a. Go to the Dial pad and dial *#197328640# 
 
b. Please click on number Debugging screen > Phone Control >  SIMULATION > NETWORK LOCK
 
c. You will see 3 - 4 options
 
d. Please click on number [1] Perso Sha256 INFO, the screen will change slightly
NOTE: If you see ENABLE_FLAG[1], contact us. If you see ENABLE_FLAG[0], continue on.
 
e. Please hit the MENU button then when the menu pops up please carefully hit BACK to return to the previous screen
 
f. Next Please click on number [2] Perso Sha256 ON, the screen will change again to a one line message
NOTE: If you see ENABLE_FLAG[1], contact us. If you see ENABLE_FLAG[0], continue on.
 
g. Restart the phone on the screen by holding the power button and click RESTART
 
h. When the phone prompts for the unlock code simply enter the unlock code provided to you
 
i. Your phone is now permanently unlocked!
 
Samsung Galaxy S4 Only
 
1. Make sure that the phone PROMPTS for the code with a NON accepted sim card and that your IMEI is correct by dialing *#06#
 
a. Go to the Dial pad and dial *#0011#
 
b. Please click your MENU button (Bottom LEFT button) and click BACK on the menu that appears, Nothing will happen do not worry please move to the next step
 
c. Please click your MENU button AGAIN and this time click KEY INPUT

d. When the Key input box appears please input the number "1" and hit OK 

e. You will see a number 1 for a while, please wait until it changes into the SERVICE MENU
 
f. Please click [1] UMTS > [1] DEBUGGING SCREEN > [6] Phone Control > [6] Network LOCK

g. You will see 3 OPTIONS within Network LOCK

h. Please click on number [1] Perso Sha256 INFO, the screen will change slightly
NOTE: If you see ENABLE_FLAG[1], contact us. If you see ENABLE_FLAG[0], continue on.
 
i. Please hit the MENU button then when the menu pops up please carefully hit BACK to return to the previous screen
 
j. Next Please click on number [2] Perso Sha256 ON, the screen will change again to a one line message
NOTE: If you see ENABLE_FLAG[1], contact us. If you see ENABLE_FLAG[0], continue on.
 
k. Restart the phone on the screen by holding the power button and click RESTART
 
l. When the phone prompts for the unlock code simply enter the unlock code provided to you
 
m. Your phone is now permanently unlocked!
 
 
 
 
 
*If this is not working, go to Solution #2
 

Samsung Galaxy Note 3
 
There is an error with the Galaxy Note 3 where sometimes when you enter the code it will display "Sim Network Unlock Unsuccessful", when in fact the device was unlocked. Try pulling the battery and restart the phone, if the prompt for "Sim Network Unlock Pin" no longer appears, the device has been successfully unlocked.
 

Solution #2

 

Follow these steps carefully.

1. Power off and on your phone with different network sim card. "SIM network unlock PIN" or "Enter Network Lock Control Key" screen will appear.

2. Type your Defreeze code (MCK code) and hit Unlock button. You will get "unsuccessful message" again but don't worry.

3. Now type the Unlock code (Network or NCK code) and hit Unlock button.

*If phone say "Network Lock Succesful" it worked, but if not, proceed to step 4.

4. If you get "unsuccessful" again then hit Dismiss button and type *2767*3855# on phone keypad.   (CAUTION! This will reformat all your data!)

5. After phone restarts, type the Unfreeze code (MCK code) when prompted to enter "SIM network unlock PIN" or "Enter Network Lock Control Key" screen and hit unlock button.

It will say "unsuccessful" again, don't worry!

6. Type the Unlock code (Network or NCK code) and hit Unlock button.

7. Your phone should now give you the message "Network Lock Successful"

Now your phone is successfully unlocked!

*If this is not working, go to Solution #3

 

Solution #3

1. Turn off the Wi-Fi on your phone and then turn device ON without SIM card.

Once it's on go to phone dial screen and DIAL: *7465625*638*#
it will bring you to the NETWORK LOCK screen.

- in MCC/MNC field enter code for the service provider your phone is originally from (eg 31026 for T-Mobile USA)

check here for list of codes: http://en.wikipedia.org/wiki/Mobile_Network_Code

*If your network has more than one mcc/mnc please try all of them this is very important

- in CONTROL KEY field enter the UNLOCK code
- hit OK
- you should get a message: LOCK SUCCESSFUL

Power phone down, insert SIM card you want your phone to work with and power on.



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