Sprint has announced unlimited data pricing plans for the iPhone on the Sprint network beginning on Friday, Oct. 14.

New and existing customers can pre-order the iPhone 4S beginning on Friday, Oct. 7 at 12:01 am (Pacific). Beginning today, iPhone 4 with iOS 5 is available for US$99.99 through sprint.com/iphone.

'Our unlimited data plans are the perfect fit for iPhone customers," says Sprint CEO Dan Hesse. "Sprint’s unlimited data plans provide more value than metered plans from other carriers. Our customers can take advantage of the innovative features of iPhone without worrying about overage charges or surprises on their bill."

The iPhone 4S will be available from Sprint starting at US$199.99 for the 16GB model, $299.99 for the 32GB model and $399.99 for the 64GB model. The iPhone 4 will cost $99.99 for the 8GB model and is available now. These prices require a new-line activation or eligible upgrade and two-year agreement.

All iPhone models will be available to new and existing customers in all Sprint retail stores, at the company web site (http://www.sprint.com) and 1-800-SPRINT, as well as select additional Sprint retail channels. Sprint retail stores will open at 8 am local time on Oct. 14 for customers to get a jump-start on buying an iPhone 4S with Sprint’s unlimited data experience.

The iPhone 4S and iPhone 4 require activation on one of the Sprint Everything plans with Any Mobile, AnytimeSM, including unlimited data, texting and calling to and from any mobile phone in America while on the Sprint Network. Plans start at $69.99 per month plus the required $10 Premium Data add-on charge. Sprint’s Simply Everything Plan offers unlimited calling, data and text for $99.99 per month plus the required $10 Premium Data add-on charge (all while on the Sprint network). The Mobile Hotspot option will be available for an additional $29.99 per month supporting up to five Wi-Fi enabled devices simultaneously. (Pricing excludes taxes and surcharges.)