Πtaking into account the cost of young people iPhone XS Max, XS and XR which is quite “stingy, the GSMArena tried to collect all the values from the iPhone 4S to date and capture them on "paper".
The reason the graph starts with the iPhone 4S, is that the older iPhones were sold largely along with contracts from the providers and therefore, their price is difficult to calculate and compare with subsequent prices. Also, note that prices have been taken from its purchase Germany, which is quite representative globally, but mainly at European level.
Over time, Apple began to introduce more than one model each year, while from 2017 it maintains the previous model on the market along with the new one, as a more economical option (eg iPhone 8). This year, of course, its economical model is the iPhone XR, while the iPhone SE is no longer available.
