Now that the iPhone 4S will be available on three different US carriers, it's time to revisit data and voice plans available with each company. Aside from differences in their networks, AT&T, Verizon and now Sprint have a variety of pricing structures available to meet your mobile needs. Overall, with AT&T and Verizon offering the iPhone for some time now the two competitors have similar pricing, although Verizon offers more tiers for data and messaging.

Sprint enters the game with higher prices for single and family voice calling, however their data option is cheap and simple. A flat ten bucks every month gets you unlimited data and messaging. AT&T and Verizon charge extra for text or MMS message packages and stopped offering unlimited data plans on the iPhone long ago. It remains to be seen if Sprint's unbeatable data plan pricing can attract iPhone 4S customers looking for unlimited data.

Here's a list of retail stores that will be selling the iPhone 4S on October 14. This is not a complete list, just some suggestions on other places you can go if you don't have an Apple Store near you. All Apple locations will be opening at 8 am local time on Friday, October 14, and will be offering a free Personal Setup service.

AT&T, Verizon and Sprint stores will also be carrying the iPhone 4S, but are not a great option. If you have to buy it directly from your carrier I would call ahead to make sure they plan to have a lot in stock.

The iPhone 4S is $199.99 for the 16GB model, $299.99 for the 32GB model and $399.99 for the 64GB model. All prices require a new or upgraded contract.

Having sold over one million iPhone 4S pre-orders, Apple has decided to open their stores early to meet the demand of the best selling iPhone ever.

“We are blown away with the incredible customer response to iPhone 4S,” said Philip Schiller, Apple’s senior vice president of Worldwide Product Marketing. “The first day pre-orders for iPhone 4S have been the most for any new product that Apple has ever launched and we are thrilled that customers love iPhone 4S as much as we do.”

All 245 Apple retail stores in the US will open at 8 am local time on Friday, October 14. Good news if you plan to get up really early or camp out the previous day. Bad news if you have to work, or are a late sleeper.

Apple asks that you upgrade your existing iPhone to iOS 5 and bring it along if you plan to replace it. You will also need the social security number of the account holder, photo ID, your carrier password and Apple ID and password.

Tired of iPhone apps checking your location and limiting features? Now you can trick any or all of the apps on your device into thinking you're somewhere else. Spoof your location data easily with a simply $1.99 app from Cydia available on jailbroken iPhones. Location Spoofer can be found in the Utilities section of the jailbreak app store.

Downloading the app requires a quick payment via Amazon payments or PayPal to the developer after logging into your Cydia account. Once installed, you can choose exactly which apps you would like to spoof into thinking you're located in a different state or country.

For those iPhone lovers who hate two-year contracts Apple will be offering the iPhone 4S unlocked in the United States. The unlocked version is already available for pre-order on the Apple online store at unsubsidized, contract-free prices. Buyers can expect to pay a $450 premium above carrier discount prices to avoid a contract, making the iPhone 4S 16GB come in at $649 with free shipping.

This puts the 32GB at $749 and the 64GB capacity model at $849. Of course the unlocked version comes in black or white, however it will only be compatible with GSM networks around the globe. This means that iPhone 4S users in the US will be limited to AT&T or T-Mobile as a choice of carriers. Currently Verizon and Sprint will require the iPhone 4S to be locked into a two-year contract to be activated on their networks.