iOS 7 runs on the iPhone 4 and later, but this doesn't mean that the iPhone 4 supports all of the new features found on Apple's new OS. This happens a lot with Apple's older devices when a new software is released. The iPhone 4's hardware just can't support all the fun things iOS 7 brings to Apple's newer devices. The new OS even looks different on the iPhone 4 because Apple has disabled some of its graphical effects to take the pressure off its older A4 chip.

For example, the iPhone 4 does not feature live wallpapers and the parallax effect found on the home and lock screens. It also misses out on the wireless peer-to-peer file sharing feature AirDrop, panorama and filters in the Camera app (however you can apply them later in the Photo app), and of course the iPhone 4 is still without Siri and all its new tricks.

Shipping times for the iPhone 5s have been pushed back to October for the gold model, and there is now a 7-to-10-day wait period for the silver and gray models. Apple told AllThingsD that "demand for the new iPhones has been incredible," and they are limiting "supply of certain iPhone 5s models in some stores."

Sources at multiple U.S. carriers previously told AllThingsD that inventory for the new iPhone was "grotesquely unavailable" before its launch on Friday. We won't know for sure if demand is actually high, or if supply is just limited, until Monday after Apple releases its official sales report.

ClamCase is one of the first accessory makers to take advantage of Apple's MFi (Made for iOS) game controller support in iOS 7. Apple previewed the new feature during an event called "Integrating with Game Controllers" at WWDC in June.

The Bluetooth gamepad features full-sized buttons, thumbstick controls and a built-in lithium-ion battery. Players can also use their iOS device's integrated gyroscope and accelerometer for "3D motion," and will still have access to their iPhone's touch-based controls while using the GameCase.

Two major retailers, Target and Walmart, have both announced a $20 discount off the on contract price of the 16GB iPhone 5c model when purchased either online or in person at their in-store mobile centers. The phone, priced at $99, drops to $79 with the mark down. Target is offering an additional 5% off if you purchase the phone with your Target REDcard. All other models remain at their original prices.

As far as the iPhone 5s is concerned, Walmart has dropped the price of that 16GB version down $10, from $199 to $189. Not a significant savings, but it’s still ten extra bucks in your pocket. Target, however, is staying with the original $199 sticker price.

The next-generation iPhones go on sale at Apple.com tomorrow at 12:01 a.m. PST, and at local Apple stores at 8 a.m., but unfortunately not everyone is eligible for an upgrade through their mobile provider. AT&T and Verizon Wireless early termination fees range between $325-350, making it expensive to upgrade to a new device every year. However, there is a way you can terminate your contract and still have a little extra cash to put towards a new iPhone 5s.

While there are many mobile phone trade in services, the best we have found is through Nextworth.com. NextWorth is currently offering around $300 or higher for used iPhones in working condition. For example, if you're one year into your AT&T contract your early termination fee will be $325 minus $10 for every month you've completed. If you trade in your your 32GB iPhone 5 to NextWorth for $317, you can pay off your $205 early termination fee and you'll still have around $112 left over to put towards a new iPhone 5s. The same deal also applies to Verizon Wireless users, but you'll have a little less extra cash on hand since their ETF is higher than AT&T's. This means you can potentially nab a 16GB iPhone 5s for around $90 or a 32GB model for around $190.