
Three 5S colors —
The latest additions to the iPhone line -- the colorful iPhone 5C, left, and higher-end iPhone 5S -- mark the first time Apple has launched two new versions of the phone. Initial reviews have been positive.

Features of the new iPhones —
The iPhone 5S went on sale September 20 in 11 countries and territories around the world. The gold-colored model, shown here, is already back-ordered online.

Exterior design —
The iPhone 5S is the flagship version of the handset and is available in silver or "space gray" as well as gold. The phone is made from hard-coated polycarbonate, is less than 1/3 of an inch thick and weighs about 4 ounces.

Upgraded camera —
The camera on the iPhone 5S has a 15% larger sensor to let in more light and shoot sharper images. A burst mode, for photographing moving targets, lets the user shoot up to 10 photos per second. And, for the first time, video can be played in slow motion.

Touch ID —
The iPhone 5S features Touch ID, a fingerprint scanner that users may use to replace a passcode. Reviewers say that, while it may seem gimmicky, the feature is actually a nice upgrade.

A more helpful Siri —
The Siri voice-activated "digital assistant" feature has been updated. Siri can now adjust iPhone settings, do Bing searches and look through Twitter. It also is now available with a male voice in the U.S.

64-bit chip —
The iPhone 5S's A7 processing chip is the first 64-bit chip to be installed in a smartphone. Apple used the new video game "Infinity Blade III" to show off its speed, which it says can render images and video as fast as a PC or gaming console.

iPhone 5C colors —
The cheaper iPhone 5C ($99) is, largely, an iPhone 5 with a plastic casing. It's available in five colors: green, blue, yellow, pink and white.


