How do you choose the model that�s right for you? It all comes down to two factors: cameras and memory. The first generation of the iPhone 4 has two cameras: a 5-megapixel camera with an LED flash that�s capable of taking high-definition video and a front-facing camera that is perfect for shooting self-portraits and making video calls. As for memory, you need to make a decision about whether you want to double the purchase price of your phone for a few more gigabytes of memory. We recommend getting as much memory as you can. If you load a lot of movies and videos onto your device, you can run out of space on a top-of-the-line iPhone very quickly.
Here are some questions to ask you while selecting the model of iPhone to purchase:
� How big is your music library? If your library is small, a unit with less memory might be fine. If it�s large, the extra space on some iPhone models helps to store additional music and podcasts.
� How many videos do you want to carry around? A single two-hour movie may occupy more than a gigabyte of storage. If you travel a lot, especially on airplanes, you may want to pay more to store additional movies and TV shows with those extra gigabytes.
� Do you plan on using your iPhone as your primary camera and camcorder? If you do, then look at the more sophisticated models with higher resolution, flash, and high-definition (HD) video capabilities. If you already carry a digital camera or camcorder with you on a regular basis or don�t frequently shoot photos or video with your existing phone, then the base iPhone model may be for you.
� Is the thought of making video calls exciting to you? For some people, just answering a regular cell phone call is a challenge. But if you love to have regular face-to-face conversations with friends and relatives, then you may want to consider the model with the built-in FaceTime video calling feature.
� Do you need to carry lots of data? Many iPhone apps use iTunes data storage and can synchronize files with your computer. Whether that data consists of presentation slide shows, project management files, or some other information that you need at your fingertips, the size of the data being stored can add up quickly. If you think you might need to do this, maybe the extra gigabytes on a more expensive iPhone model could be put to good use.
� How long do you intend to keep this iPhone? If you�re an early adopter who likes to trade up at the earliest possible opportunity whenever Apple offers a new model of iPhone, you may want to �buy in cheap� each time the new models are released and sell your old iPhone on the aftermarket. If you�d rather get the most use out of the iPhone over the longest period of time, then paying more up front means you won�t outgrow the iPhone quite as fast.
Source of Information : Taking Your iPhone 4 to the Max
