NEW YORK (CNNMoney.com) -- The Apple iPad models for use on AT&T's 3G network will be available at the company's stores starting at 5 p.m. local time on April 30, and the devices will be delivered on the same day to customers who pre-ordered.
The Wi-Fi + 3G models of the tablet computer will cost $629 for 16GB of memory; $729 for 32GB; and $829 for 64GB.
Internet access over the 3G cell phone network is offered through AT&T and does not require a contract. Previously, Apple (AAPL, Fortune 500) has said 3G coverage will cost $14.99 for 250MB of data per month, or $29.99 a month for unlimited data.
Models that can be used only through Wi-Fi networks hit stores on April 3, costing $499 for 16GB; $599 for 32GB; and $699 for 64GB.
Customers who buy iPads at an Apple retail store will receive free "personal setup service," in which employees load up email and apps onto the device.
U.S. consumers can buy the iPad at Apple retail stores, the company's website, most Best Buy stores, some authorized resellers and campus bookstores.
Apple also said the iPad will be available at the end of May in Australia, Canada, France, Germany, Italy, Japan, Spain, Switzerland and the United Kingdom. International pricing announcements and online pre-orders will start May 10.
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