iPhone 4 pre-orders start at Sprint, unlimited data plans official

Sprint (s s) has begun taking pre-orders for the 8 GB iPhone 4 Apple (s aapl) announced at its press event on Tuesday. The iPhone 4 will retail for $99 on a two-year contract, and Sprint says it should deliver by Oct. 14 or Oct. 15 if you pre-order now.

You can order either the black or white iPhone 4 right now, and the best news of all is that you’ll be able to tack on Sprint’s unlimited data pricing plans, too. Sprint announced via official press release on Wednesday that it would be making unlimited plans available for both the iPhone 4 and iPhone 4S, which start at $69.99 plus $10 Premium Data add-on for plans with restricted minutes, and go up to $99.99 plus $10 Premium Data add-on for the Simply Everything plan.

Sprint will start taking pre-orders for the iPhone 4S on Friday, Oct. 7. Pricing for the iPhone 4S on Sprint is the same as it is on other U.S. carriers; $199 for the 16 GB version, $299 for 32 GB and $399 for 64 GB. To get those prices, you have to sign up for a new two-year agreement, either as a brand new customer to Sprint, or and existing customer who’s eligible to upgrade.

The iPhone is a notorious network data hog, and some were worried that unlimited data might not fly when Sprint got the device. In a recent article, wireless consultant Chetan Sharma noted that Sprint is in much better shape than AT&T (s t) was to deal with iPhone data demands. However, another wireless industry expert, Michael W. Thelander, cautioned that because of the nature of Sprint’s bandwidth spectrum, it may run into coverage problems similar to those encountered by AT&T customers.

It might also just generally be slower. Stacey went into detail about why; Sprint uses a CDMA-based 3G network with considerably slower theoretical speeds than AT&T’s HSPA+ network can offer. However, Sprint’s network divides voice and data traffic on different networks, which should enhance call quality even as it sacrifices some speed in terms of tasks like loading mobile video.

Are you planning to pre-order an iPhone from Sprint, and if so, is unlimited data a motivating factor? Does it matter that network speeds may be perceptibly lower?