It's official, the rumors were true. Apple has started selling unlocked iPhone 4 in white and black starting at $649 for the 16GB model, and $749 for the 32GB model. Apple's unlocked iPhone 4 comes without a micro-SIM card installed, but you can pop any micro-SIM card from any supported GSM carrier around the world. You will need to insert an active micro-SIM card in order to complete the setup of your iPhone 4 and fully use it. It's always with the little limitations with Apple.