How to Unlock Samsung Galaxy S Infuse 4G AT&T

The following is a step by step guide to unlock AT&T Samsung Galaxy S (Infuse 4G) to use on All GSM carriers including T-Mobile. I have verified every step on both Android Froyo and it had worked for me. It should work for you too. This is the easiest method i've found and it does not require you type or modify files manually. So it's safest and you will be unlikely to brick the phone.

1. Check whether your phone is already unlocked or not. Follow the steps here.
2. If it is not unlocked. Download and install InfuseRootUnlock_V4.zip (Windows/Linux Only)
4. Enable the USB debugging mode on the phone in Settings -> Applications -> Development -> USB Debugging
5. Connect the phone to PC via USB and run the root.bat file
6. It should root the phone and output a unlock code in the console. Take down the unlock code.
7. Now disconnect the phone and insert your Non-AT&T sim card (T-Mobile sim card for example)
8. Reboot the phone and it should ask for your network unlock code. Input the code obtained from step #6 and confirm.
9. Now your phone should be unlocked. You can verify whether the phone is unlocked with steps described in #1.

Note: If the anything goes wrong. You may hard reset the AT&T Samsung Galaxy S and start over.

Leave a comment if it works for you!

How to check if Samsung Galaxy S Infuse 4G for AT&T is locked

To check whether the phone is locked:

• Power on Samsung Galaxy S AT&T Infuse 4G
• Go to phone and enter *#7465625#. If the Personalizatiob Status says the network lock is OFF, Congratulations, you phone is already unlocked and ready to be used with other carriers.

To relocked the phone (for warranty service):

• Remove sim card
• Power on Samsung Galaxy S Infuse 4G for AT&T
• Enter *7465625*638# and relock the phone to another network.

 

Leave a comment if it works for you!

How to Unlock Samsung Galaxy S Captivate AT&T Android 2.2 Froyo

 

The following is a step by step guide to unlock AT&T Samsung Galaxy S (Captivate) to use on All GSM carriers including T-Mobile. It is fairly long process but I have verified every step on both Android 2.2 and 2.1 and it had worked for me. It should work for you too. This is the easiest method i've found and it does not require you type or modify files manually. So it's safest and you will be unlikely to brick the phone.

1. Check whether your phone is already unlocked or not. Follow the steps here.
2. If it is not unlocked. Download and install superoneclick to root the phone. A good instruction video below. You can download the tool from here.
5. Now go to Marketplace download and install the busybox Installer by Stericson. Run it to install busybox.
6. Now go to Marketplace download and install the app Galaxy_S Unlock by Helroz. Follow the steps in the app to unlock. A good instruction video below:

Note: If the anything goes wrong. You may hard reset the AT&T Samsung Galaxy S and start over.

 

Leave a comment if it works for you!

How to check if AT&T Samsung Galaxy S Captivate is locked

To check whether the phone is locked:

Power on Samsung Galaxy S AT&T Captivate
Go to phone and enter *#7465625#. If the Personalizatiob Status says the network lock is OFF, Congratulations, you phone is already unlocked and ready to be used with other carriers.

To relocked the phone (for warranty service):

Remove sim card
Power on Samsung Galaxy S Captivate for AT&T
Enter *7465625*638# and relock the phone to another network

Leave a comment if it works for you!

How to Unlock Samsung Galaxy S T-Mobile Vibrant

 

The following is a step by step guide to unlock T-Mobile Samsung Galaxy S (Vibrant) to use on All GSM carriers including AT&T. It is fairly long process but I have verified every step and it worked for me. It should work for you too. This is the easiest method i've found and it does not require you type or modify files manually. So it's safest and you will be unlikely to brick the phone.

1. Check whether your phone is already unlocked or not. Follow the steps here.
2. If it is not unlocked. Download and install superoneclick to root the phone. A good instruction video below. You can download the tool from here.
7. Now go to Marketplace download and install the app Galaxy_S Unlock by Helroz. Follow the steps in the app to unlock. A good instruction video below:

Note: If the anything goes wrong. You may hard reset the T-Mobile Samsung Galaxy S and start over.

 

Leave a comment if it works for you!