Another year, another iPhone. As is tradition this time of year, Apple has once again come out with a brand new iPhone. But this time, Apple's coming out with not just one new iPhone, but two: the iPhone 5S and the iPhone 5C. Both phones will be released to the public this Friday, September 20th. But before you decide to get your hands on one, (or at least wait in ridiculous lines to attempt to get one...) here's what you need to know about both phones.

iPhone 5S

First up, the iPhone 5S introduces a slew of new features and upgrades you can't get on iPhone 5, many of which are admittedly pretty impressive. One of the most important upgrades includes a new, more powerful A7 processor, so if you're the type who loves their apps, the 5S may be just what you're looking for. And for those aspiring smartphone photographers, the 5S camera comes with a few new tweaks, like a bigger picture sensor, a five-element lens and more "sophisticated" image processing.

There are also some new security features on the 5S, the most notable being Touch ID. The iPhone 5S will come with a fingerprint sensor that will allow the phone's owner to bypass your phone's log-in screen and even make a purchase over iTunes. By the way, it's worth noting that Apple has promised they won't keep people's fingerprints on file. The iPhone 5S will cost $199 for the 16GB model, $299 for the 32GB, and $399 for the 64GB model with a two-year contract.

iPhone 5C

The second of Apple's new iPhones, the iPhone 5C, could better be described at "iPhone 5 Lite." There's really not too many differences between this model and the iPhone 5. It runs on the same A6 processor as the iPhone 5, and boasts many of the same features with very few new additions. In fact, about the only new features the phone has is longer battery life, more support for LTE coverage and improved FaceTime.

But the most notable difference is the phone's casing. Instead of the shiny aluminum casing of the 5S, the iPhone 5C has a soft, silicon casing and in available in brighter colors: blue, green, yellow, pink and white. The iPhone 5C is also a bit cheaper, costing just $99 for the 16GB model or $199 for the 32GB model with a two-year contract.

Which one is better?

For me personally, I would pick the 5S over the 5C, due to the more powerful processor and added security features. But like I said before, if you already have an iPhone 5, I don't really see a need to rush out and get the 5C, as there's really not enough difference between the two to justify replacing it. But, if you have an older model, like the iPhone 4, and have been looking to upgrade to a newer model, now's a good chance.

One last thing: before the new iPhones hit the market, the rest of us iPhone users can upgrade to the new iOS 7. Apple’s new operating system should be available for download this Wednesday, September 18th, just 2 days before these new iPhones hit the market. And you can also check out my quick look at iOS 7 to see what you can expect.

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