How to Sim Unlock T-Mobile

3 different method for How to Unlock T-mobile sim for Samsung galaxy, LG, iPhone, Nokia, Motorola and htc mobile to use any sim with t-mobile.      

1st method for T-mobile sim unlocking by finding unlock code house inside your T-mobile.

                  As t-mobile is carrier locked then sim unlock code must hidden inside t-mobile. Some of older android, you can find mobile carrier unlock code at /dev/block/ folder. This 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 hexa editor.         
                  Latest t-mobile smartphone are sim locked at boot level. You need to copy boot partition and search for unlock code. Root your mobile and copy boot partition. Here I brief you steps for this.

Step1. Download USB driver for t-mobile model.
Step2. Download rooting software as per mobile. Samsung, lg has different working rooting software and Motorola, htc has different. Find proper software for this. And install software on computer.
Step3. Go to mobile setting – developer option and enable USB debugging and enable OEM unlocking. When mobile is locked at boot level, you need to enable OEM unlocking.
Step4. Download android SDK – software developer kit or at least download ADB and FASTBOOT. 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/. Open it in hexa editor. 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 t-mobile with other sim like o2 , orange, at&t, roger etc. If you modify this booting file code. I mean modify boot partition and reflash to your t-mobile. Then it will not ask for unlock code and mobile is network unlocked. But when you reflash to t-mobile, system file must be properly edited and having signature. Then only you can flash it. Also look for unlock code within boot partition. Even trust zone exploit can also unlock mobile.
 T-mobile Unlock


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

To generate unlock code you need.
1. IMEI number of t-mobile.
2. Make and model of mobile. Lg ThinQ, lg v50, Samsung galaxy s9 active, Nokia lumia, Motorola, htc desire etc.
3. MCC and MNC for your sim card.
T-mobile USA mobile country code=310 and mobile network code=260.
T-mobile UK mcc= 234 and mobile network code=30.
4. Location where mobile is locked USA, UK, Canada, France and Germany.
               These software generate different kind of unlock codes 1. NCK – network carrier code 2. SPCK – service provider unlock code 3. Defreeze or unfreeze code 4. NSCK- network subset key or network subsidiary Control Key. In most of the cases NCK is used as a sim network unlock pin. Once unlock code is generated you can unlock mobile by below procedure. 

T-mobile Samsung unlock.

                  Start Samsung with non accepted sim card. Now it show message that invalid sim card or sim restricted. And ask to enter sim network unlock pin for t-mobile Samsung. Now enter nck code which you have generated from IMEI. It shows network unlock successfully message on screen.
             If above method will not work, then start mobile with t-mobile sim or without sim and dial    #7465625*638*nck#. This will deactivate network lock on Samsung t-mobile.

                  And if you have entered unlock code many time and Samsung mobile hard locked or permanent locked. Then you need to use both defreeze 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 region or roaming locked.

T-mobile lg unlock method:

                     Start t-mobile lg with other sim. Then go to dialer type 2945#*851#. This will bring you sim unlock menu – select service provider lock – enter 16 or 8 digit sim network unlock code for t-mobile. Now you get network unlock successful message. Sometime it require to restart mobile for fully function. For Nokia, Motorola and htc mobile process is similar to above lg and Samsung mobile.

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

                  First create t-mobile account, download t-mobile device unlock apps. Keep log in with your account on that app. Open t-mobile app and tap on device unlock. Now here you can unlock t-mobile temporary and permanent.

T-mobile Sim Unlock

     For temporary unlock you must use sim data of t-mobile. 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 at least 40 days and if mobile is on installment basic. You must paid fully. If mobile is on contract basic then transfer in common plan no contract. Pay termination fee as per sim unlock policy.
                       Open device unlock app, tap on permanent unlock, now app connect to t-mobile server and submitting IMEI and other information about mobile. If IMEI number is in white list, then mobile will be unlocked. You don’t need unlock code. Just restart 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 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 t-mobile.  They will take unlock request and send you unlock code via email.

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