How To

How To SIM Unlock Samsung Galaxy S4 Free

In this guide, we’ll let you know you that how to SIM Unlock Samsung Galaxy S4 for free. The network will probably lock if you have just purchased a new Samsung Galaxy S4 from a carrier and you will be required to SIM unlock it because it is important if you wish to use your S4 on any other network. Here, we have given some easy steps that will help you to SIM unlock the Galaxy S4 and you can do it for free.

As we’ve mentioned before that the main purpose to SIM unlock your phone is to use it on another carrier and that’s why SIM locks exist because carriers don’t want you to leave their network. In the following guide, we will provide two simple methods that will be able to SIM unlock your Samsung Galaxy S4. The first method is free and it will take a few minutes, while the second one needs you to purchase an unlock code. Please keep in mind that after SIM unlocking, your phone will work with any carrier, you must first check that your device is compatible depending on the GSM bands each carrier is using. Make sure to check all bands, including the 2G, 3G, and 4G. Because some carriers use different ones, you might be able to make calls but the data could not work. Now go ahead and we’ll start with the first free method.

How To SIM Unlock Samsung Galaxy S4

How to SIM Unlock the Galaxy S4 (Free Method)

This is a free method and is our favorite but you’ll need to be careful and follow every step without mistakes. In the case of anything doing wrong or mistake, you might brick your device. Make sure that the battery level of your phone is about 60 to 70% before proceeding to further steps. This method is tested and works with the following variants of Samsung Galaxy S4:

  • I9500
  • I9505
  • I9506
  • I9505G
  • I337
  • M919
  • I545
  • L720
  • R970
  • I959
  • I9502
  • I337M
  • M919V
  • R970X
  • R970C

Step 1: Open the phone dialer of your Samsung Galaxy S4.

Step 2: Dial *#0011#

Step 3: Press Menu

Step 4: Tap Back

Step 5: Now press Menu and open the Key input

Step 6: Enter 1 and press OK

Step 7: Press Menu and tap Back

Step 8: Tap [1]UMTS

Step 9: Tap [1]DEBUG SCREEN

Step 10: Tap [6]PHONE CONTROL

Step 11: Tap [6]NETWORK LOCK

Step 12: Tap [3]PERSO SHA256 OFF

Step 13: Press Menu and then Back

Step 14: Tap [6]COMMON

Step 15: Tap [6]NV REBUILD

Step 16: Tap [4]RESTORE BACK UP

After completing the above steps, your will freeze. So wait for a while and press Menu when you can, then Back key ON and then your device will reboot.

Done! You have successfully SIM unlocked your Samsung Galaxy S4.

We hope that this method will work for you but still, you are unable to SIM unlock your phone then you can try the alternative method, which needs you to purchase an unlock code.

How to SIM Unlock the Galaxy S4 with doctorSIM:

Step 1: First, find the IMEI code of your Galaxy S4 by navigating to Settings > About device > Status or simply by dialing **#06#*.

Step 2: Go to and purchase an unlock code for your IMEI.

If you encounter any issues while SIM unlocking your Galaxy S4, please let us know in the comments area below.

Aamir Jamal

An Android Geek and audiophile who love to read and write reviews/tutorials about gadgets and new tech stuff. He has written 1007 guides and other posts.

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