If you'd like to unlock your iPhone 4 for multiple carriers, now is the time. iPhone dev blog has just announced that the ultrasn0w carrier unlock now supports iPhone 4. Version 1.0.1 of the unlock will now work for iPhone4 baseband 01.59 and 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04.
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