Composing a Photograph on Your iPhone with the Rule of Thirds
Your iPhone can capture a detailed photograph, but how well the photo is composed is up to you. One common photo-composition trick is called the Rule of Thirds. With the Rule of Thirds, you imagine lines that divide your photo into thirds both horizontally and vertically. The four "power points" are at the intersections of the lines. Put the subject in your scene at or near a power point of the photo.

iPhone Glossary
FaceTime
Apple software that enables users with supported mobile devices to both see and hear each other during wireless conversations.

iPhone Glossary
iCal
Apple’s personal calendar application.

iPhone Glossary
iCloud
Apple’s wireless storage and synchronization service that keeps digital information updated automatically and wirelessly without user instigation.

iPhone Glossary
iOS 5
The operating system for mobile Apple devices released in June, 2011. With iOS 5, data updates and synchronization occur wirelessly through the iCloud.

iPhone Glossary
jailbreak
Altering an electronic device to remove default restrictions imposed by the manufacturer.

iPhone Glossary
Siri
A voice-controlled personal assistant application purchased by Apple and available exclusively on the iPhone 4S.