What types of screens are Retina, LCD, AMOLED, OLED ...?
currently, there are quite a lot of screen technologies that are commonly used on phones such as retina, amoled, oled ... so, which smartphone screen technology is good? let'sNokia X7 review
nokia x7 running symbian anna is new, but the speed of 680mhz is not strong. it is designed like a spacecraft with a 4-inch wide and beautiful screen.