How to sim unlock samsung galaxy

How to sim network unlock samsung galaxy for at&t , t-mobile, metropcs, orange or o2 sim.

                    T-mobile, at&t, roger, sprint, Verizon all company sell samsung galaxy models with sim locked condition. There are o2 and orage also sell sim locked samsung mobile. So you cannot use other sim on that samsung galaxy without unlocking galaxy mobile. To unlock samsung galaxy you need sim unlock code.

             When mobile is locked its mobile unlock codes also hidden inside that samsung galaxy mobile. So here I will give procedure to find unlock code from mobile.

1 method to unlock samsung galaxy mobile:
                     You can unlock any samsung galaxy mobile using this method. In this method we will find unlock code hidden inside efs folder. Efsis important partition it has all network related information and imei related information.

                         You need computer, samsung galaxy mobile, rooting software, super user apps, usb driver for your galaxy mobile, android software developer kit –sdk, or adb.

1. Connect samsung galaxy to computer and install usb driver for samsung galaxy or install samsung kies. Make sure you install driver as per galaxy model.

2. Install rooting software on computer or install rooting app on mobile. In other word root your mobile.

3. Install super user app on your mobile.

4. Install android software developer kit or install adb – android debug bridge on computer.

5. Now enable usb debugging on samsung galaxy. And connect galaxy mobile to computer.

6. Now open command prompt on computer and go to adb directory. And then start adb shell.

7. Here we are going to copy efs partition which is stl5 and then find the file named perso. Samsung galaxy unlock code reside in this file. So then we open file in any hexa editer or browser which can open and view fat or vfat formatted files.
             Now mount efs partition by typing this command. You can use other command and parameter if you know unix very well.
                  Mount –o nosuide.ronodev –t vfat /dev/ block/stL5 (efs partition name in some galaxy mobile it is stl4 but in most of the mobile it is stl5). Now open parso file using this command cat /efs/mits/perso.txt. now sim unlock code for samsung galaxy is inside this perso file. It is of 8 digit galaxy sim network unlock codes. In this perso file there are many 00 or ff or hh character and symbols something like that so check carefully and when you found unlock code note down on paper. Now you must unmount efs partition otherwise your samsung galaxy considered as bricked.

              If you don’t want to root your mobile. then there are many free apps and software which can copy or backup android mobile partition. You can download those apps. But those apps need supper user access so grant super user access to those app and backup your efs partition and find perso.txt file and search for galaxy unlock code inside it.

                                Once you find unlock code note it down on paper. Start your galaxy mobile with other sim like at&t, t-mobile sim, cricket, o2 or orange sim. Now you will see sim error message like network locked simcard inserted or  invalid network sim enter correct sim or enter network lock control key. Here enter sim network unlock pin. Enter your galaxy sim unlock code and your galaxy mobile is unlock and you can use any sim with it.

2 method to network unlock galaxy mobile :

                   Some suggest that twicking with efs partition may damage your mobile. And some time your imei number become 00 or corrupted. So here I will go for other file where unlock code is hidden. Path is /dev/block/bml5.

                 Now we already rooted galaxy mobile and we have installed super user. So just go to command prompt and brwose to adb shell directory. Now use below command to copy bml file.
At adb shell $
Cat /dev/block/bml5 >  /sdcard/bml5.bml. 

                                       This will copy file to sd card now transfer to computer. And open this file in hexa editer or and browser which can view fat or vfat file. Now find 8 digit sim unlock code for samsung galaxy.  You will find unlock code 2 to 3 places on this file.  Process for tmobile or at&t mobile unlocking is same for galaxy mobile. Once you get unlock code start galaxy mobile with other sim like fido sim, roger sim, matropcs or bell telus sim you want to use. Now you will get sim error message like - enter restriction code or simcard rejected, enter special code or subsidiary password, invalid network sim phone disabled network locked. Different galaxy mobile get different message but to unlock galaxy mobile you need to enter network lock control key. Enter 8 digit galaxy sim network unlock code. And your mobile is unlocked.

3 method for samsung galaxy sim unlock :
  Latest galaxy mobiles are locked at boot level. For that you need to trick with boot partition to unlock galaxy. I have explained this method in detail at t-mobile unlock for samsung galaxy, lg, nokia or motorola unlock.  Here I will brief you about that method. You can also use above two method for lg unlock or nokia unlocking.

           For this 3 method you need to dump or copy boot partition or bootloader. So root mobile, enable usb debugging and oem unlocking under developer option. Now go to adb shell and copy boot partition. Now open that partition and there is code inside this partition which force to enter unlock code when you insert other sim now if you modify that code or modify this partiton and reflash to galaxy mobile system then your mobile will be unlocked for all gsm sim card. You can also use this method for network unlock lg, nokia or motorola mobile.

            Some of the galaxy mobile are region locked and to unlock those galaxy mobile you need defreeze code and nck code.

Howto Remove Sim Restriction on Lg G6 mobile

How to sim network unlock lg g6 all models for t-mobile, bell, roger, fido, at&t, telus, o2 and orange sim.  

                    Lg has many models . One of popular is lg g6. Usa Uk, Canada gsm and cdma company sell lg g6 models in sim locked condition. And if you try to use other sim like bell, orange,o2 or at&t, t-mobile on lg g6 then it give sim error message like sim restricted enter code, network locked sim card inserted and ask for sim network unlock code or invalid incorrect network sim phone disabled enter special code. You must unlock mobile to use other gsm sim.

Here I provide 3 different ways for sim unlocking lg g6.

1 method Lg g6 unlocking bootloader without unlock codes.

                     You can use this method for sim unlock lg g6 for some of northern American model, European lg g6 models and Usa carrier free model. But if you are from other location then also take one try for this method. First take full backup of your lg g6.

1. Download and install usb driver for lg g6 on your computer.  Now to check whether proper driver is installed as per your lg mobile. Connect your mobile to computer and it must be recognized and found under my computer. Make sure you have driver as per your mobile model.

2. Download android sdk package or atleast download and install adb and fastboot on your computer. Adb act as a bridge between android device and computer so that they can communication.

3. I also suggest to install super user on your mobile.

4.  Now turn on usb debugging and oem unlocking option on your lg g6. For that go to lg g6 setting – developer option and select both this option.

5.  Now connect lg g6 to computer via usb cable.

6. Now start your lg g6 in fastboot or bootloader mode. For that type this command at adb shell   -   adb reboot bootloader.  This will start g6 in bootloader mode.
7. We started mobile in fastboot mode to find device id of lg g6. Here is how to find device id of lg g6. Without device id you cannot unlock lg g6 by this method. Use below command for device id.

Fastboot oem device-id.

Now you will get 3 4 line string in two line you get around 64 alpha numeric character which is device id. Now note down this device id.

8. Now go to lge developer site.  Create your free account with valid email id. You will receive unlock file on this email id.

9. Now again go to lge site. Click on unlock and then submit your imei number of lg g6, device id, your name and email address and then click on confirm.  If your lg g6 is valid for unlocking then you will receive unlock.bin file to your email id. Now download that unlock bin file to your computer. Now paste that unlock bin file to adb folder directory which is at c:\ program files \...,

10. Now you need to flash this unlock.bin file to your boot partition to remove network lock on lg g6.  As your lg g6 in bootloader mode. Use below command.

Fastboot flash unlock unlock.bin.

This will modify system boot partition and unlock your lg g6 now you can use any other sim like sprint, varizon with you lg g6.
Now  type command fastboot reboot now your mobile start in normal mode and lg g6 unlocked.  You can use this method for motorola unlock or htc nokia unlock. But  you can not unlock samsung using this method as samsung does not provide unlock file for any of its models.

2 method for lg g6 sim unlocking by generating unlock code from imei number of lg g6.

You can generate network unlock codes for any of lg mobile including lg g5, lg v10, lg v20, lg stylo, lg k10 etc. there are many apps and software available at playstore and internet which can generate unlock code for free. Even model specifil software are also available. Lg has different apps and software.  Nokia and samsung galaxy has different apps for generating unlock codes. To generate sim unlock code you need following information about your smartphone.

1. Imei number of your lg g6. And if it is dual sim then sim1 or master sim slot imei number.

2. Make and model of your mobile.

           Usa and Canada lg g6 models are at&t lg g6 h871,t-mobile lg g6 h872 and Canada lg g6 h873. Lg g6 h870ds dual sim for Russia hong kong and Europe. Us cellular lg g6 us997, sprint lg g6 ls 993 cdma and gsm and Verizon g6 vs998 gsm, cdma, lte and wcdma support.

3. Mobile country code and mobile network code for sim card with locked lg mobile.

T-mobile Usa mcc=310 and t-mobile usa mnc=260. Unlock code for tmobile usa is 16 digit. Lg unlock code may be 8 digit or 16 digit depending upon simcard.
T-mobile Uk mcc= 234 and mnc=30.
 mcc at&t sim Usa= 301, for  at&t Usa mnc code are 070,090.
At&t maxico mcc=334 and mnc at&t maxico is =010,050.
Mcc mobile country code for Canada is302 and telus Canada mnc=220,
fido Canada mnc=370, bell Canada mnc=640.
Mcc for United Kingdom is 234. O2 sim uk mnc=02, orange sim uk mnc=33,34, vodafone sim uk mnc=15
France mcc is 647 and orange france mnc=00. Germany mcc is 262 and o2 sim germany mnc is 03 and Vodafone sim Germany mnc=02.
4. Location where mobile is sim locked.

                           Those software apps generate different kind of unlock code named 1. Network unlock code nck also considered as sim unlock code or sim network unlock pin. 2. Service provider unlock code –spck. 3. Defreeze or unfreeze code – this is used when you mobile is hard locked or permanently locked as you have entered wrong sim unlock code manytimes. This is also used when you mobile is region locked or roaming locked.  4. Nsck – network subset code. To unlock fido sim you need both nsk and spck code.

                                 You can also generate sim unlock code for samsung, nokia, motorola and htc mobile using this method. Samsung unlock code is mostly 8 digit. Nokia unlock code has 15 digit and Sony ericson unlock code is  having 15 and 16 digit.

 Once network unlock code is generated here is how to network sim unlock lg g6 using unlock codes.

                              Now start lg g6 with foreign or non accepted sim now you get dialog box to enter sim network unlock pin or sim unlock code or special code. Enter nck code which you have generated. Now you get message network unlock successfully and restart your mobile. But if you mobile don’t ask for unlock code and only show network locked sim card inserted. Then start mobile with accepted sim or without sim and then go to dial paid and enter 2945# lg model number# tmobile model number 872 and lg  at&t mobile unlock model no 871. Now it will show a menu having these option depending upon how you lg sim locked  sim lock,network lock, service provider lock etc. select network lock and enter your  lg sim unlock code. This will unlock lg g6 and you can use any sim on that mobile.

3 method network unlock lg g6 by finding unlock code house inside lg mobile.

                      When lg mobile is sim locked then sim unlock code house inside lg mobile. Here I will give you places where lg unlock code hidden inside mobile. First look at /dev/block/ folder. Some of android mobile keep unlock code in this folder. Also look at root/ carrier folder and also search for unlock.bin or simlock or network lock file. You need to root your mobile to have access this folders.  In some of motorola or htc mobile unlock code house at dev/block/mmcblk0p6 partition you can use su dd if command to copy this file.  Unlock code is in hexa decimal so convert it to decimal and then use as network unlock codes.

              Latest samsung galaxy, lg, motorla smartphone are locked at boot level. There are mostly using kitkat or marshmallow os. So unlock code for samsung galaxy, lg, nokia and motorola are hiding inside boot partition. Or even modifying boot partition can also sim unlock cellphone.  You can use apps which can copy or backup mobile partition or you need to root your mobile and copy this partition. There are many free apps available which can copy partition of your mobile but it need super user access.  So install those apps on your mobile give super user rights and copy boot partition.  Or

              Root your lg mobile. For that download proper rooting software. Install usb driver of your lg g6 to computer. Install sdk – software developer kit from lg site or you can also download from internet. Also install super user on mobile.
Now enable usb debugging and also enable oem unlocking on your mobile. Now on your computer go to command prompt and use adb shell. And type this command 
dd if=/dev/block/platform/msm_sdcc.1/by-name/aboot (aboot is a boot partition name it may be different on lg ) of=/sdcard/aboot.img. now script code is inside boot partition which force to enter sim network unlock pin when you start lg g6 with non accepted sim. So if you modify boot partition and reflash to lg g6 then it will not ask for unlock code and you can use any sim on lg g6.

How to Sim Unlock T-Mobile

 How to unlock T-mobile sim for  samsung galaxy,lg, samsung, nokia, motorola and htc mobile to use any sim with t-mobile.
  T-mobile is well known usa gsm service provider and also sell many mobiles of samsung, motorola, nokia, lg, htc and samsung galaxy models on installment basis and also on subsidiary based. These mobile are t-mobile sim locked that means you cannot use any other sim on this mobile without sim unlocking t-mobile. 

            Now if you start t-mobile with other sim like sprint, Verizon without unlocking then you will get error message like incorrect invalid network sim enter code,  phone disabled network lock, invalid microchip, simcard rejected enter special code or network unlock code. For different tmobile model sim error messages are different, but in all models you need sim network unlock code for unlocking mobile.

           Here I will explain 3 different methods for t-mobile unlocking for various samsung galaxy, lg, nokia,motorola and htc mobiles.

1method for tmobile sim unlocking by finding unlock code house inside your t-mobile.
                  As you t-mobile is sim locked so sim unlock code is hidden inside t-mobile. Depending upon your mobile model like lg, motorola, htc, samsung or samsung galaxy, nokia. Location for sim unlock code is different. Here is will give you some possible ways to find mobile network unlock code house inside android smartphone.
                 Some of older android phone you can find mobile sim unlock code at /dev/block/ folder. These is mainly used for samsung galaxy t-mobile unlock.  You can use su dd command to copy this partition. You can also look at root/ carrier folder. Some of htc mobile you can look at dev/block/mmcblk0p6/. Use su dd if command to copy this file and open it in hexaeditor.
                  Latest t-mobile smartphone are sim locked at boot level. So here you need to copy boot partition and then search for unlock code. For that either you use apps for backing up mobile partition. There are many free app available for this on play store. Or you root your mobile and copy boot partition. Here I brief you steps for this.

Step1. Download usb driver for your tmobile model. Lg , nokia, samsung and motorola drivers are available on their site.

Step2. Download rooting software as per your mobile. Samsung, lg has different working rooting software and motorola, htc has different so find proper software for this. And install software on computer.

Step3. Now go to mobile setting – developer option and enable usb debugging and enable oem unlocking. When mobile is locked at boot level then you need to enable oem unlocking to sim unlock mobile.
Step4. Download android sdk – software developer kit or atleast download and adb and fastboot. And install on your computer and also install super user on mobile.
Step5. We are doing all this to copy boot partition bootloader and paste it to computer. Connect mobile to computer and boot in fastboot mode. Now run adb on windows command prompt.
Now use this command
 dd if=/dev/block/platform/msm_sdcc.1/by-name/aboot  of=/sdcard/aboot.img . This will copy bootloader partition. Aboot is booting partition name, it may be motoboot, lgboot or mmcb1 etc depending upon which mobile you are unlocking.. Now transfer this to computer by using this command
adb pull /sdcard/backup/aboot.mbn  /home/admin or windows login username folder/ desktop/ t-mobile unlock folder/. Now open it in hexa editor. And find boot.mbn inside that file. Now there is start and end point under boot.mbn. there is code scripted which force you to enter sim network unlock pin when you start tmobile phone with other sim like o2 , orange, at&t, roger etc. so if you modify this  booting file code or I mean modify boot partition and reflash to your t-mobile then it will not ask for unlock code and mobile is sim unlocked. But when you reflash to tmobile system file must be properly edited and having signature then only you can flash it. And also look for unlock code within this boot partition even trust zone explot can also unlock mobile.

2 method unlock t-mobile by generating sim network unlock code from imei number:

            You can unlock t-mobile by generating sim network unlock code from imei number of samsung galaxy, lg, nokia, motorola or htc mobile. It does not matter whether it is a t-mobile or at&t mobile. There are many free apps and software available for generating unlock code. Even mobile model specific apps are also available for network unlock code.  To generate unlock code you need
1. imei number of t-mobile.
2. Make and model of your mobile. Lg g6, lg v20, k7, samsung galaxy note 7, note3, galaxy s8 active, galaxy mini, nokia lumia, motorola g5, moto, htc desire etc.
3. mcc and mnc for your sim card. Here we are unlocking tmobile so
T-mobile usa mobile country code=310 and mobile network code=260.
T-mobile uk mcc= 234 and mobile network code=30.
4. Location country where mobile is locked Usa, Uk, Canada, France, Germany.
               These software generated different kind of unlock codes names 1. Nck – network carrier code 2. Spck – service provider unlock code 3. Defreeze or unfreeze code 4. Nsck- network subset key or network subsidiary unlock code. In most of the cases nck is used as a sim network unlock pin or network unlock code. And if your mobile is hard locked because you have entered wrong unlock code many times in that case both defreeze code and nck code is used. Once unlock code is generated you can unlock your mobile by below procedure.

T-mobile samsung unlock
There are many samsung models which are locked with t-mobile network. Samsung galaxy, samsung galaxy s7 edge, samsung galaxy s8, galaxy note5 note3 etc.

                  Start your samsung mobile with non accepted foreign sim card matropcs, o2 sim or orange sim. Now it show message that invalid simcard or sim restricted. And ask to enter sim network unlock pin for tmobile samsung. Now enter nck network unlock code which you have generated from imei number of your tmobile phone. Now you get network unlock successfully message on screen. And you can use any sim on your t-mobile.
              But when you enter other sim like bell, telus, o2, orange and you do not  get above dialog box for entering unlock code then  start tmobile with t-mobile sim or without sim and dial    #7465625*638*nck#. This will deactivate network lock on your samsung tmobile.

                  And if you have entered unlock code many time and your samsung mobile hard locked or permanent locked then  you need to use both defreeze or unfreeze code and network unlock code for that dial      #0199*defreeze code*#  and then  #0111*nck#. This will permanently unlock samsung mobile. Unfreeze code is also used when mobile is location based or roaming locked.

Tmobile lg unlock method:

                     Start t-mobile lg phone with other sim like at&t, sprint, cricket, orange or o2. Then go to dialer type 2945#*851#. This will bring you sim unlock menu – then select  service provider lock – then enter your  16 or 8 digit sim network unlock code for t-mobile lg which you have free generated from imei number of your tmobile. Now you get network unlock successful message. Sometime it require to restart your mobile for fully function. Your lg t-mobile is unlocked and you can use any gsm sim on your t-mobile.

T-mobile nokia unlock steps:
                        Start your nokia t-mobile with foreign or non tmobile sim. Now it will prompt to enter unlock code for nokia tmobile. Enter nck code here and tap done. Now you will receive network unlock successfully and your nokia mobile is permanently unlocked. Process for unlocking tmobile microsoft lumia is similar as nokia mobile.

T-mobile htc unlock:
                Start your htc tmobile phone with other simcard o2 orange or at&t sim. Now you will get enter sim network unlock pin for htc t-tmobile. Enter sim unlock code for htc and tap ok. Your htc t-mobile is unlocked and you can use all other sim.

3 Method T-mobile device unlock app for unlocking mobile:

                  T-mobile has its own application which you can use for mobile unlocking. First create t-mobile account then download t-mobile apps to your mobile and install it. Keep log in with your account on that app. Now open t-mobile device unlock app and tap on device unlock. Now here you can unlock t-mobile temporary and permanent.

     For temporary t-mobile unlock you must use sim data of your t-mobile simcard. You cannot temporary unlock t-mobile using wifi connection. You can temporary unlock t-mobile for few days. But once you have temporary unlocked t-mobile, you shall wait till expiry of temporary unlock then only you can unlock permanently.

                    For permanent unlock t-mobile, you must have used it for atleast 40 days and if mobile is on installment basic then you must paid fully. And if mobile is on contract basic then transfer in common plan no contract and then  also pay termination fee as per sim unlock policy.

                       Now  open device unlock app, tap on permanent unlock, now app connect to t-mobile server and submitting imei and other information about your mobile now it there is no due then imei number is in whitelist and mobile will be unlocked. You don’t need unlock code. Just restart your t-mobile and you are free from t-mobile network and can use all other sim.
                  If this device unlock app not working then restart your mobile, update app. If it still not working then uninstall and reinstall app. Otherwise you can contact t-mobile customer care and ask for unlock code for your tmobile.  They will take your unlock request and send you unlock code via email. Once you receive unlock code follow below procedure to unlock your tmobile.

T-mobile motorola unlock:
Start mobile with other carrier sim like at&t, roger, cricket, metropcs.
         Now you are prompted for enter special code or please wait to enter special code or enter sim network unlock code for motorola tmobile sim. Enter 8 digit unlock code which you have received via email. Now your motorola is unlocked and you are free from t-mobile network. And you can use any gsm sim on your t-mobile.