Samsung Galaxy S4 was released almost 2 years ago and is still one of the best smartphones in the market right now. To make things even better, Samsung is providing new updates for Galaxy S4.
There are many ways to do it, some techniques suggests you to pay for an unlock code and some to root your phone. But the tricks we are providing here are straight forward and you do not need to pay anything. Here are the simple tricks to unlock Galaxy S4 region lock.
Unlock Galaxy S4 TMobile for Free – Method 1
If you are a T-Mobile Galaxy S4 user, use the following steps to unlock your device. This is helpful if your device does not qualify the T-Mobile unlock policy.
Here are the steps:
Goto phone dailer, and enter *#27663368378# for the debug service menu.
In “ServiceMode”, select  UMTS
In “UMTS MAIN MENU”, select  DEBUG SCREEN
In “DEBUG SCREEN”, select  PHONE CONTROL
In “PHONE CONTROL”, select  NETWORK LOCK
In “NETWORK LOCK”, select  PERSO SHA256 OFF It should show: SHA256_ENABLED_FLAG SHA256_OFF => SHA256_ON
Now touch the first line SHA256_ENABLED_FLAG It should show: MENU NOT EXIST PRESS BACK KEY Current Command is 116631
Now press the menu button and select “Back” It should show: SHA256_ENABLED_FLAG SHA256_OFF => Not Change
Again, press the menu button and select “Back”, and you’re back in the “NETWORK LOCK” screen
Press the menu button and select “Back”, and you’re in the “PHONE CONTROL” screen
Press the menu button and select “Back”, and you’re in the “DEBUG SCREEN” screen
Finally, press the menu button and select “Back”, and you’re back in the “UMTS MAIN MENU” screen
Select  COMMON
In “COMMON” screen, select  NV REBUILD Now you are in the “NV REBUILD” screen, you should see the following text: —————————— Golden-Backup exist You can Restore Cal/NV ——————————
Now for the final step. In “NV REBUILD” screen, select  Restore Back-up The button lights for menu and back should come on, and the phone will auto reboot in a few seconds.
This video demonstrates how to SIM unlock Galaxy S4 for free
How to unlock Galaxy S4 – Method 2
This unlocking procedure is based on latest FCC directive for unlocking smartphones. To make things more clear here is the important FCC order which bound all carriers and operators to unlock smartphones to use on other networks.
Before you call customer care to unlock your Samsung Galaxy S4 make sure you have all the details about the contract attached to the phone subscription.
Will my provider unlock my phone?
All service providers who signed onto the CTIA Consumer Code for Wireless Service have fully implemented the six standards on unlocking. Participants include all nationwide service providers, as well as a number of regional providers. Each participating provider has posted its unlocking policy on its company website and will respond to unlock requests.
Here are the unlocking policies for major service providers in USA