AT&T today announced it will offer iPhone 5 beginning Friday, Sept. 21. Customers will be able to pre-order iPhone 5 online beginning Friday, Sept. 14 at www.att.com/iphone. iPhone 5 will be available for a suggested retail price of $199.99 for the 16GB model, $299.99 for the 32GB model, and $399.99 for the 64GB model. Only AT&T offers the nation’s largest 4G network, along with a variety of shared and individual data plans.