Using the Apple Upgrade program locks you into the big three mobile providers

Apple's new leasing program has an odd rule: you need to use Verizon, AT&T, or T-Mobile.

The new Apple Upgrade program has a key piece of fine print: “If you’re leasing an iPhone, you’ll need to connect to AT&T, T-Mobile, or Verizon when you enroll.” In a new post today, John Gruber at Daring Fireball has a likely explanation for this requirement.