Friday marks the day Apple's new iPhone 4S hits the market, and many want to be the first to get their hands on it.

If you are one of the unlucky ones who did not make it in the pre-order lists of Apple online store and wireless carriers, there is still a chance you can get hold of the new iPhone 4S.

Make sure to make a round of calls and check every retail store before going the mile of lining up in front of them. Check out the places below of where you can buy the new iPhone 4S.

* Apple Stores - Of course, the first place that you need to check is the Apple store. This is your best bet for getting the newest iPhone. You will not fail as Apple always has the latest model of their products on their launching. But your problem will be an intense competition with others hoping to get their hands on the phone. Apple also has a recycling program that yields great savings when you purchase the new iPhone. A good condition iPhone 4 will get you $200. Apple has a return policy within 14 days.

* Mobile Carriers - The next stop is your mobile carrier. Earlier this month, AT&T, Verizon Wireless and Sprint reported being sold out on pre-orders. The carriers have reserved few units to be sold on the launch date. Verizon and Sprint have return policies within two weeks and AT&T has 30 days of return policy. For those outside the U.S., please check your local carriers companies and networks that might be offering the new iPhone 4S.

* Radio Shack - Do not rely on this too much as most of the units in Radio Shack are sold out on pre-orders. Radio Shack has a return policy of 30 days.

* Best Buy - One of the best alternatives to Apple Store is Best Buy and they are taking in-store pre-orders. Best Buy has a return policy of 30 days.

* Target - You may get a better chance with Target. Moreover, they offer trade-ins for iPhone 4 and iPhone 3GS, which is $200 and $120, respectively. This is at par with Apple's recycle program. Target has a return policy of 30 days.

* Sam's Club - This store has been offering iPhone 4S for pre-orders since Tuesday. Moreover, they will offer units Friday while their supplies last. Sam's Club has a return policy of 30 days.

Advantages of Buying iPhone 4S

Here are some of the things that you should know if you are planning to buy the new iPhone:

Design/Case

The iPhone 4S is very similar to the iPhone 4 in design. However, the former is quite thinner than the latter with 9.3mm and light enough with 137 grams.

Processor

Apple gave iPhone 4S an edge when it comes to the dual core processor as the new handset is equipped with A5 chip processor similar to iPad 2. The Apple A5 chip has a dual-core ARM Cortex-A9 processor clocked at 1GHz. On the graphics front, it's an upgrade to a dual-core PowerVR SGX543MP2 GPU and there's, again, 512MB of RAM in support.

Camera

Another point for the new phone is its new 8-megapixel camera with the ability to shoot a more headline and impressive 1080p.

Connectivity

Apple allowed showing everything on your handset such as Web pages, games, messages, etc. in the new iPhone 4S with the built-in 4G radio inside.

Software

Along with the iPhone 4S is the launch of the new iOS 5. Both handsets can run with the new software. However, you no longer have to install it in the iPhone 4S. Moreover, the new Siri feature, which is a voice-controlled personal organizer, set the difference. It can translate your more human, sentence-based commands into actions.

Whenever you plan to purchase the iPhone 4S, make sure to present your SSN, valid ID, Apple ID and your password. If you are planning to upgrade, bring your old phone.