How To SIM Unlock for Free Samsung Galaxy S4 I9505 and I9500

In this article,  I will teach you an easy method to SIM unlock for Samsung Galaxy S4 i9505 and i9500 smartphones without using a paid application.

As you probably know that the Samsung Galaxy S4, in this moment represent the highest Android based phone that exist in the market

The Samsung Galaxy S4 has been released this year in April and at this moment is highly appreciated by the Android users.  It comes with the latest Android version (Jelly Bean 4.2.2) preinstalled and brings the high end features.

The price for this device if isn’t a carried locked can be high, and that’s why most of its users prefer to buy a network locked Samsung Galaxy S4 device.

Today during this tutorial we will teach you how to SIM unlock the Samsung Galaxy S4 device. And the main advantage is that is totally free.

Before starting the tutorial, you need to know this step by step guide will work only for Samsung Galaxy S4 (i9504 and i9500 models numbers).

To be sure your device is the same with the mentioned version of S4 devices, you need to verify this by navigating to Settings > About Phone.

This guide is an easy method to unlock the SIM locked for Galaxy S4 device, we won’t use complex operations, tools or scripts or codes. The unlocking process will be made using its menu options.

This guide won’t get void the warranty for your device and won’t damage or brick your device in any way.

Isn’t required to have a rooted device, or to have a distinctive or dedicated tool installed into device.

This tutorial is an easy method if you’ll follow all the steps and you won’t skip any step, you have to respect their order and don’t do supplementary things by yourselves. If you won’t follow the exact order of steps and all the steps, you can get stuck, and we cannot be able to solve your devices problems. So this step by step guide is provided only for educational and instructional purposing and all you’ll do with your device is in your own risk.

So remember that this guide is tested only for Samsung Galaxy S4 I9505 and I9500 models, so don’t apply this guide for any other similar devices.

After you unlock your S4 device’s SIM you can install other official Android firmware.

 How to SIM unlock the Samsung Galaxy S4 i9505 and i9500 for free –  Step by step Guide:

• Important: not use the “back” button of your S4 smartphone when you perform the below steps; instead of physical button, use the “Menu” and from there select “back” from the options list that will be in the screen.

1. Launch the Service Mode on your Galaxy S4 device. To do that tap “*#0011#” in the dialer of your S4 smartphone.
2. Now, after the Service Mode menu will be showed, tap on “menu” – left soft key and after the dropdown menu which is displayed select the “back” option.
3. Next, tap on Menu button once again and select “Key input” this time.
4. Tap on the box that will be showed and there enter “1” and after that click/tap on “OK”
5. Now, go back to the main Service Mode menu and from there this time tap on “menu” and select “back” option.
6. From the Service Mode menu, select “[1] UMTS” option.
7. Now, Up next, and select “Debug Screen” from the next screen.
8. From the new option menu tap on “Phone control” option.
9. Now, from the “phone control menu” tap on “network lock”.
10. Now, select “PERSO SHA256 OFF” option.
11.  Return to the UMTS menu ; ( to do that, you need to press on the menu button and from there select the back option).
12. Now, you are in the UMTS menu.
13. From the UMTS menu, tap on “Common”.
14. And from there, select “NV REBUILD” option.
15. Now, from the new menu which is showed select “Restore backup”.
16. After that, your Samsung Galaxy S4 device will be get a freeze state. It is normal to be on a freeze state in this step.
17.  Next, the screen of your display will be black, and the LED from the S4 phone will be colored into blue light color.
18.  When the process is done, your S4 device will get an automatically reboot.
19.  Now, wait to perform the first boot, this boot take more time to complete than usual.
20. Your Samsung Galaxy S4 i9505 or i9500 is SIM unlocked.

That’s all instructions that you need to follow in order to SIM unlock for the Samsung Galaxy S4 i9505 and i9500 devices.

Now your device isn’t assigned to a specific carrier.

To verify if your S4 device is a SIM unlocked device, you should take a SIM card from any 

other different carrier and see if it works with this new SIM card.