How to Unlock the iPhone 3G

Posted January 30, 2009 at 12:35pm by iClarified | Please help us and submit a translation by clicking here | 2042843 views
Dutch  Norwegian  Hebrew  Romanian  Korean  Turkish  Croatian  Portuguese (Brazil)  Russian  Chinese (Simplified)  Slovak  Polish  German  Latvian  Slovenian  Greek  Vietnamese  Swedish  Portuguese  French  Arabic  Spanish  


These are instructions on how to software unlock the iPhone 3G for use with any GSM cellphone carrier.

Before you can follow these instructions you must have a jailbroken iPhone and you must be on the 02.28.00 baseband(modem firmware). This means that you must be running the 2.2 firmware or have used PwnageTool(NOT QUICKPWN) to install 2.2.1 without upgrading the baseband.

To find your firmware and modem firmware(baseband) versions you can follow this tutorial. If you are not on baseband version 02.28.00 then you need to follow one of these tutorials before unlocking: Mac, Windows

Watch the Video!
For your convenience this tutorial is available in video format also. Click the Watch It button to view the tutorial!

Step One
Press to launch Cydia Installer from your SpringBoard.

Step Two
Press to select the Manage tab at the bottom of the screen.

Step Three
Press to select the large Sources button

Step Four
Press the Edit button at the top right of the screen.

Step Five
Press the Add button at the top left of the screen.

Step Six
Enter as the source url and press the Add Source button.

Step Seven
Once the source has been added press the large Return to Cydia button.

Step Eight
Press the Done button at the top right of the screen.

Step Nine
Press to select from the list of user entered sources.

Step Ten
Press to select yellowsn0w from the list of packages

Step Eleven
Press the Install button at the top right of the screen.

Step Twelve
Press the Confirm button at the top right of the screen.

Step Thirteen
After installation completes successfully press the large Return to Cydia button.

Step Fourteen
Now press the Home button then power off and power on the iPhone. You do this by holding down the power button for 3 seconds then moving the power slider that appears to the right. Press the power button again to turn on the phone.

Step Fifteen
You should now be able to insert the SIM of your choice!

***HINTS: It seems that getting your iPhone to pick up your new carrier can be helped by turning off 3G and perhaps toggling the Airplane Mode switch on and off. If you are still having problems try removing and reinserting the SIM or booting with the new SIM already inside. Finally, you can also try to Reset Network Settings from the Settings:General:Reset Menu.

***IMPORTANT: For those having trouble. The yellowsn0w application can simply be uninstalled. If you have tried all the hints and suggestions and still have problems just use Cydia to remove the package and then reboot. You will then have service with your locked carrier as always.

***THANKS: A big thank you to all the members of the iPhone Dev-Team for all their hard work! It is much appreciated by all.

***UPDATES: The Dev-Team has made yellowsn0w 0.97 available. This version supports the 2.2.1 firmware using the 02.28 baseband.
Add Comment
namedas - November 24, 2014 at 2:13pm
Good post.There are only few unlock services who offer unlock without the jailbreak for an iPhone model.I too availed my unlock from such a third party unlock, and permanently unlocked my phone through their remote unlock service. With their free unlock instructions I was able to unlock the phone very easily.
Andrespenee - April 22, 2014 at 9:15am
One moldiness weigh both the fortunate and bad of taking any type of sustenance! Is it outstrip to direct slimming pills and lose the artefact metric or avoid them and attempt the consequences of fat?
edongzki - March 21, 2014 at 7:25pm
Information and articles posted on this site are really useful to the readers. Keep up the good work on sharing your great ideas. Hyde Beach Resort on
Itaym - July 29, 2013 at 9:44pm try this one,I have unlocked my phone there. very fast service and cheap, now i can update to any version without having to worry that my phone will be locked ever again. Only 7$ for iphone unlock!
jim - June 12, 2013 at 1:34pm
After trying all the sites mentioned down there, I personally think the most reliable unlock is attiphoneunlocking, unlocke both mine and my wife's phone under 2 hours.
816 More Comments
Follow iClarified
Apple Watch Takes Two Hours to Charge, Doesn't Display Notifications Unless It's On Your Wrist
New Apple Watch Details Leak
A collection of new Apple Watch details have ...
Jonathan Ive on Designing the Apple Watch
The Financial Times has posted a new profile ...
Japan Display Confirms New $1.4 Billion LCD Manufacturing Plant
Japan Display has confirmed that it will buil...
Apple Among Companies Urging U.S. Supreme Court to Support Gay Marriage
Apple, Microsoft, Google, and Facebook are am...