After over 5 years of owning an iPhone, I will describe the most important iPhone features that you will find very usefull.
Some of the questions that many people shopping to buy a smart phone dont really know what the iPhone is exactly. Some people buy an iPhone just because it is a trend, and you would look cool if you have one.
the iPhone is more thatn just a trend,the features
Generally new iPhones inprove in speed, so expect faster CPU and faster graphics and more ram from new iPhone
What does the iPhone come with?
Why buy an iPhone?
What is the advantage of buying an iPhone vs another smart phone?