Samsung Mobile Sim Network Unlock Pin

How to get Samsung mobile Sim Network Unlock Pin from IMEI  & Samsung galaxy carrier unlocking without unlock code.

1st technique: Find Samsung Sim unlock code hidden inside mobile. 


           Samsung mobile unlock code is house inside android operating system. You can find it at dev/block/ folder, carrier folder or EFS folder. EFS contain all sim carrier network information and IMEI number information. Also look at boot partition as newer smartphone are locked at this level.

2nd technique: Samsung sim unlocking with unlock code.

Below are the four types of unlocking codes for various Samsung GSM mobile.
1) Network unlock codes / NCK : which is most widely used. These codes are Samsung IMEI unlocking codes as they are generated from IMEI number.    
2) Service provider unlocks pin/code or SPCK. 
3) SCK – sub provider unlock code
4) Unfreeze or Deep freeze unlock code / MCK / Master Control Key which is used for hard locked Samsung Smartphone. Samsung galaxy hard locked when maximum attempt for inserting unlocks code is applied. Also used for region lock removal.

To generate Unlock Codes.


Following information are required.
 1) IMEI number of Samsung.
 2) Serial no of your GSM Sim card, only few older software ask for it.
 3) Mobile Country Code / MCC and Mobile Network Code / MNC. Country code and network code are where carrier sim originally locked.
 4) Sometime you need uptime of your cellphone which is vary rare for Samsung. Some black berry mobile unlocking asks for it.

        There are many applications available on play store and android store to generate code as per the model of Samsung. It generates above four types of unlocking codes.

Samsung Galaxy S unlocking code instruction help :- 

this method is applicable to Samsung galaxy j7  j5 j3,   Samsung galaxy a5 a7 a3 duos, galaxy s5 s6 edge+.  But if you are using older Samsung then here is the Samsung unlock codes for various older Samsung model.

Step 1:- start the phone with battery charged.
Step2:- enter the service code *7465625*638*# to get Samsung galaxy service mode.
Step 3:- pop up windows appear, first field MCC mobile country code & MNC mobile network code. For example USA country code/MCC is 310 and MNC /network code is different for different GSM.
        If you don’t know MCC and MNC code for GSM sim. Enter service mode code *#27663368378# or *#0011#. It will display these detail.

 Samsung Unlock

In second field NCK / network unlock codes. Enter 8 to 16 digit code you have generated from IMEI of Samsung.

Technique 3: Samsung galaxy s4 & s4 mini service mode sim unlocking without using unlock code. 

    1) Enter the service mode code *#27663368378#  or *#0011#. Phone will automatically start in service mode menu.
      2) Display show basic service mode information.
    3) click menu button at bottom of Samsung galaxy s4  and then you have these option end, back, key input, select, help, WiFi. Tap back key in menu.     
     4) Again tap on menu button and click key input, enter 1 and press OK.

        Samsung Sim Network Unlock Pin
     5) This will bring you UMTS main menu, select 1st option debug screen.
     6) Now you have six option basic information, NAS information, AS information, GPRS information, SIM information and PHONE control, Select phone control.
     7)Now you have 7 option DRX control, fake security control, NAS control, UE STATE control, simulation, NETWORK LOCK and network control. Select network lock option.       

         Samsung Sim Unlock

You have 3 options, select PARSO sha256 off
Samsung Network Unlock
If you don’t find PARSO sha256 off option. Then use following command at android level.

Unblock the key string file with command  --
     echo -n "OFF" > /efs/FactoryApp/keystr

To enable hidden menu of sim carrier use this command  --

   echo -n "ON" >/efs/carrier/HiddenMenu
This will bring parso sha256 off option, this is used to unlock network lock.

Now back to main menu and then back key from menu.
       8)On UMTS menu following option debug screen, version information, UMTS RF NV, GSM RF NV, audio, common, Select common.
       9) Now select option NV rebuild.
  10) Select restore back up.

    11) Now Samsung galaxy s4 restart. It need few minutes and it is network unlocked.

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