An iPhone is a smartphone designed by Apple, which is today’s most well-known cellphone all over the globe. The first develop that technology can change about cellphone is design. In the past cellphone is highly big, thick, and heavy but today is not the same it is very small, thin, and light you can carry them wherever you go. Some might say that the price is too high, but you can see everyoneis carrying them today. It might be because of their luxurious designs or maybe it’s their staggering applications such as camera, map, compass, calculator, etc. In the past if you want to use a map, you have to pick them up and open them while some of the map is highly big so it is very difficult to open and see. Furthermore, the calculator is something that we use a lot in everyday life, no one like to put them in their bag wherever they go because it is too heavy.