You will be very limited if you have the network locked phone, and if you also not like your network as well. While some times, the network operator ask you to unlock your mobile for a little fee. Think about a situation where you are going abroad and need to use a different networkâs SIM. Unlocking can actually keep away you from a few complications.
As you know, to unlock any device you have to pay a little fee to the carrier network, or to various on-line services that would make it possible for you buy an IMEI unlock. However, we suggesting you to save your money and time by applying this process. Samsung, usually, has been more comfortable towards allowing its consumers carry out a SIM unlock on their own. Today, we will tell how to unlock, Galaxy S4 GT-I9505.
Before we commence, please be suggested that the typical disclaimer does apply. The unlocking is very risky, and more complex. Abide by these directions at your own risk. iPho9.com cannot be responsible for any loss whatsoever. Also keep in mind that this process is applicable to GT-I9505 only, and not to other variations of Galaxy S4.
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Step 1: Start the Phone app on the Galaxy S4, and call in: *#0011#
Step 2: Push the Menu button after the Back key. Then, press the Menu button once again and choose KEY INPUT. Type in 1 and click the OK button to get into ServiceMode.
Step 3: Then once again push Menu button and tap Back button again. This will show the Main Menu of ServiceMode. Then select  UMTS.
Step 4: Now choose DEBUG SCREEN, then  PHONE CONTROL.
Step 5: From the following screen, select the  NETWORK LOCK.
Step 6: You will offer three options. Select the  PERSO SHA256 OFF.
Step 7: Now get intoto Main Menu. Press the Menu button then press by the Back key. From the Main Menu, now select COMMON, and then select  NV REBUILD.
Step 8: The phone will ask you that a Golden Backup is available. then select  Restore Back-up.
Your phone will now going via a sequence of various conditions, in which it will initially freeze, then a black screen with a Blue LED will on and the capacitive buttons will be on, after that it will restart immediately. The whole routine might take a time, so you have to be patient. Once it you phone is on, it will be network unlocked, completely.