3. Retina display screen, the most sumptuous piece in the iPhone 4, costs a bomb – $28.50. The total cost of the gadget is $200, although that does not take into consideration design, branding or assembly.

4. A round figure of 500 million iPhones has been purchased by loyal Apple customers. The number of sold units has been overwhelmingly increasing since last spring. If all iPhones sold over the world were distributed among the US citizens, eighty percent of the USA inhabitants would have an iPhone.