Unlock your iPhone 4 for use on any network carrier with ultrasn0w

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Making a micro sim cardPhoto credit: kalleboo (Flickr)

The hotly awaited sim unlock for the iPhone 4 is finally here.  Released just a short while ago, ultrasn0w has been updated to include the iPhone 4 provided your baseband is 01.59.00* or older.

In order to take advantage of this you’ll need to jailbreak your iPhone 4 (for which we provided a guide a few days ago) and then simply browse and install ultrasn0w from within Cydia.  Once installed, reboot and pop in and enjoy using your carrier sim of choice.

ultrasn0w install screen in Cydia

ultrasn0w install screen in Cydia

Another fabulous day for the jailbreak community.  Thanks so much iPhone Dev Team!

* To find out your iPhone baseband tap “Settings” > “About” and then scroll down to see “Modem firmware”

Related posts:

  1. How to: Jailbreak and sim unlock iPhone 3G using custom 3.1.2 firmware
  2. How to: Jailbreak and sim unlock iPhones using stock 3.1.2 firmware
  3. How to: Jailbreak your iPhone, iPad or iTouch using JailbreakMe
  4. How to: Jailbreak iOS 4.2.1 with greenpois0n (untethered)
  5. How to: Upgrade / jailbreak iPhone 3G with iOS4 and redsn0w

Filed Under: AppleHow ToiPhone

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About the Author

Techie, Jailbreaker, Apple blogger, married, father of two, hugely interested in social media, photography & anything online. Living the dream!
  • Darth_vader

    this did not work for me at all , i tried the ultrasn0w but still nothing and in the end i got SIM FAILURE