iPhone 5s

Zagg is now accepting orders for its invisibleSHIELD screen protector for the iPhone 5s and iPhone 5c. The Original invisibleSHIELD offers standard screen coverage for $14.99. The Smudge Proof version is designed with the same materials as the original, but it "reduces the appearance of smudges and fingerprints," and "improves screen visibility under bright conditions," according to Zagg. The Smudge Proof invisibleSHIELD is $19.99

Zagg's "most popular" product is the HD screen protector which Zagg claims offers a "glass-like surface" for $14.99. The Extreme protection model features a unique shock and break resistant layer and is " virtually indestructible". The Extreme sceen protector is $29.99.

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.

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.

Multiple online sources are saying the supply of the iPhone 5s will be “extremely limited” upon its September 20th release . If you’re in the market for the white/silver and white/gold colored phones, you might have an even harder time getting your hands on those models than you will the “Space Gray” versions. “An average of three out of every four units” will come in that color according to 9to5Mac.

Unlike the iPhone 5c, the 5s was not available for pre-order, so those seeking the new device will have to either wait by the computer on Thursday night for the clock to strike 12:01, or rush to a local retailer first thing Friday morning. Although the cause of this shortage has not been confirmed, BGR speculates this lack of supply could be the reason for the ban on pre-launch sales. All available stock is being reserved for stores on the day of release.