What kind of cell phone do aliens prefer?

The mobile phone industry in the human world no matter under whose rule, the materials used are quite colourful. Although there are three main categories of glass, metal and plastic, the process and material choices are varied, and the actual materials used may be more than that. This is the crystallization of human wisdom, at least after the destruction of the Earth, the next wave of intelligent life-body archaeology can also find different materials mobile phone in the industrial design and manufacture of the miracle. So exactly what kind of material to make mobile phones to appear high-end enough to give aliens and subsequent civilizations to impress? Do you use double-sided glass, anodized alumina, like the iphone, or gold or diamonds like Vertu and Heuer? These are really nothing. Glass: Heavy and retain the texture of the mobile phone body glass materials used to really carry forward when the iphone 4--with the side of the metal side of the style, jobs in the press conference will be praised for his old Leica camera, although do not know the iphone 4 FML card camera exactly where. Then this kind of design to carry forward the big machine in, including Nexus 4 and still active in the market Oppo R1, and before long we have been evaluated the hammer phone. This type of mobile phone is often characterized by heavier weight than the same volume of equipment, which is the key to a significant reduction in iphone 5 compared to 4s weight, in other words, weight and texture. The disadvantage is that the fall on the ground is quite a tragedy, see Nexus 4 know. Polycarbonate: Plastic also has texture polycarbonate began to mass active in the market impression from Nokia's N9 began, followed by Nokia's almost all Lumia series mobile phones are polycarbonate shell, and the flagship equipment are integrated molding. Polycarbonate is simply plastic, but in Nokia and Apple's iphone 5c, it feels better than some plastic-branded brands. Cellular phones with polycarbonate are not uncommon today, such as the past HTC One X, Sony Xperia S, etc. Usually this kind of material still can let the equipment maintain good texture, and the cost will not appear too high, the endurance is also good.