HOW TO: Unlock iPhone 3G/3Gs And iPhone 4 With Ultrasn0w

YES! iPhone 4 unlock is finally here. The iPhone DevTeam just released their new version of ultrasn0w which will unlock your iPhone 3G/3Gs and iPhone 4.


  • T-Mobile USA uses different 3G freq than Apple “says” it supports. So you won’t get 3G , just EDGE.
  • Most T-Mobile users in the USA using the iphone4 after tonight will need to disable 3G mode in Settings->General->Network
  • For those who hand-cut your T-Mobile SIMs and still see “No SIM”, just be patient. Reposition it in the tray & try again

NOTE: probably most of you will need to convert their SIM into a microSIM. Nothing to fear about. Read about microSIMs here, and here’s a great tutorial on how to do it.

NOTE: ultrasn0w works with:

  • iPhone4 baseband 01.59
  • 3G/3Gs basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04

How to unlock:

1. Load Cydia and add source:

2. Install ultrasn0w

3. Respring your iPhone

4. Enjoy your new unlocked iPhone