Knowledgebase - Samsung (Network Unlock Request Unsuccessful) Freeze Code/MCK Troubleshooting

Samsung (Network Unlock Request Unsuccessful) Freeze Code/MCK Troubleshooting

Network Unlock Request Unsuccessful with Freeze Code


Note: This method is used when NCK code fails “Network Unlock Request Unsuccessful”.


1) Power on the phone with not accepted SIM Card
2) Dial *2767*3855# (Factory Format)
3) Phone will kill all activities running and reboot
4) Enter Unfreeze Code > Select “Unlock”
5) Phone will display “Network Unlock Request Unsuccessful”
6) Enter Network Unlock Code
7) Phone will display “Network Unlock Successful”


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