A view days ago I told you that the Dev Team is planning to release a unlock for the iPhone 4 within two days after some final tests. Now two days later they released the unlock to the public, its called ultrasn0w 1.0-1. Its made for baseband 01.59.00 which is used for iOS 4.0 and iOS 4.0.1 on the iPhone 4. Ultrasn0w 1.0-1 can also be used to unlock 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04. Thanks to a unlock you can make phone calls with any provider you want.