Apple has much downside yet. The iPhone being unlocked is costing Apple huge in kickbacks from AT&T every year.
Apple has apparently sold 3.7 million and AT&T only activated 2 million. That's 1.7 million phones without kickbacks. More importantly that's 45% of the expected revenue from AT&T!!!
Every million phones unlocked costs Apple $400,000,000!!!! yes that's $400 million!!!
So at 1.7 million unlocked they are already back $680 million in expected revenue lost. Hoochie momma