Quick Search
Select your Brand
![]() |
Select your Model
![]() |
The #1 Site For Online Unlocking
The #1 SOURCE For Resellers
Live Support
![]() |
Warranty:All our Unlock CODES are 100% genuine and guaranteed, if for any reason your unlock codes are Not Found in our database then we will issue a full refund. |
|
|||||||||||||||||||
![]() |
You should select the original carrier of the phone(Phone is Currently Locked to) |
![]() | We are the Direct Source for Apple iPhone 3GS AT&T Factory Unlock. We can unlock any iPhone model, Version, Baseband, and OS. Do you have an IMEI that other sellers said Not Eligible? No problem with us, we have a 99.98% success rate for all Apple iPhone 3GS AT&T. |
Please take backup of your iTunes before you start.
1. Please make sure that you are running the latest version of iTunes software on your computer. You can check it at http://www.apple.com/itunes/download
The next 2 steps are optional to unlock your iPhone, but these 2 steps will make sure that your iPhone is running the latest operating system software. If you do not have the original carrier SIM card or do not wish to update your firmware, please go to step 4.
2. If you've the SIM card from your original network (the network your iPhone is currently locked to), insert it. Connect your iPhone to your computer using the Dock Connector to USB cable provided with your iPhone.
3. Update your iPhone's software in iTunes (It's running the latest iPhone Operating System or iOS).
4. Insert a SIM card from a new service provider into your iPhone. It doesn't has to be a SIM card from the network you wish to unlock - it can be any valid SIM card from ANY network provider except the network your iPhone is currently locked to.
Inserting Sim - original iPhone
Inserting Sim - iPhone 3G & iPhone 3Gs
Inserting Sim - Apple iPhone 3GS AT&T
5. By inserting new SIM card, connect your Apple iPhone 3GS AT&T to your computer and wait for iTunes to detect your phone.
6. Once it's been detected, disconnect the Apple iPhone 3GS AT&T from your computer and wait for 20 seconds or so.
7. Reconnect your Apple iPhone 3GS AT&T to your computer and wait for iTunes to detect it again.
8. Once your Apple iPhone 3GS AT&T is detected for 2nd time, the process is completed and your Apple iPhone 3GS AT&T will be unlocked. After searching for few seconds, you'll see your new carrier logo appear in the top left hand corner on the screen of your iPhone's. This unlock is permanent and you can update your iPhone's firmware at anytime.
If you wish to see the unlock screen below within iTunes to confirm this is an official unlock, simply perform a restore within iTunes and once your iPhone is restored you will be presented with the message "Congratulation's, your iPhone has been unlocked" once the restore has completed.
All our Unlock CODES are 100% genuine and guaranteed, if for any reason your unlock codes are not found in our database then we will issue a full refund.
It is illegal to unlock USA devices that are manufactured after January 26th, 2013 unless you have permission from your service provider. Please find more details Here. We will not provide any service for any USA service provider cell phone or smart phone manufacturered January 26th, 2013 or later. MasterUnlockCode.com will not be held liable or responsible if you place an order for an unlock code for any USA service provider cell phone that was manufacturered January 26th, 2013 or later. If you make a purchase on MasterUnlockCode.com or any affiliated website you accept full responsibility for complying with all local, national, and international laws. MasterUnlockCode.com will not knowingly give any advice or provide any service to anyone who wishes to unlock a phone that was purchased from a USA service provider manufacturered January 26th, 2013 or later in The United States of America.
![]() |
Why purchase from us?
1. We are the direct source for IMEI remote unlock codes.
2. We have the fastest processing times 3. We guarantee our services. If a code is "Not Found" or if the code isn't working we will give you a 100% refund. 4. If you are having problems unlocking your device our knowledge staff and support will guide you through the procedure. |
![]() |
Ready to unlock your device now?
1. Yes it is completely legal and you will not void the
warranty on the phone!
2. We have unlocks for most of the major phone manufacturers including Blackberry, HTC, Samsung, Nokia, Sony Ericcson, LG, Huawei, Palm, HP and many more! If you do not see your manufacturer listed below please contact us! 3. By buying a code from us you are getting the fastest and highest quality service available on the market. We offer 100% working unlock codes from all the major manufacturers or your money back. |