Orders for the iPhone 5 topped 2 million in the first 24 hours after Apple started taking them at 12 midnight Pacific time on Friday. That's more than double the amount of iPhone 4S orders on its first full day.

The company also says that while most preorders will be delivered on Friday, demand for the iPhone 5 exceeds the initial supply, so some of the devices are scheduled for delivery in October.

The iPhone 5 has a bigger screen — 4 inches measured diagonally — that allows room for another row of icons and lets widescreen movies fit better. The calendar will now show five days at a time instead of just three. Previous iPhone models carried 3.5-inch screens. The phone is also thinner and weighs less than previous models.

Apple says the iPhone 5 will be available at its 356 U.S. stores starting Friday. Each customer that makes a purchase at a store will be offered free personal setup service, which will help them customize their device.

Canada and nine other countries can also purchase the phone starting Friday. The cheapest 16 GB version will retail for $699; $799 for the 32GB model and $899 for the 64GB model.

Aside from Apple stores, the iPhone 5 will be available at Apple's website as well as through AT&T, Sprint, Verizon Wireless, some Best Buy, RadioShack, Target and Walmart stores and certain Apple authorized resellers.

Earlier Monday AT&T Inc. said it set a sales record for the iPhone 5, with customers ordering more of them than any previous iPhone model on the first day of orders and over the weekend.

The Cupertino, Calif. company's stock added $7 to $698.28 in morning trading after rising as high as $699.54 earlier in the session.