Review on iPhone 5's outside construction

According to public opinion, iPhone 5 will use 4-inch screen, compare to iPhone 4, iPhone 5's antenna will become longer, as the screen is bigger.

Not only that, iPhone 5 will be constructed by three pieces metal rather than 4 pieces we talked before. Two at the top, and last one is U-shaped at the bottom, custom iPhone 4 case . There is one-piece metal back panel to squeeze together metal sheet on both sides. This design makes iPhone 5 look lightweight and slim.

Canceled the glass panel design, the thickness of iPhone 5 is 2-3 mm thinner than iPhone 4S. Although it is not big difference, but 32% thinner than before.
Antenna is integrated outside the metal body, GPS, Wi-Fi and Bluetooth transmission is still separated. Signal transmission must be doen through non-blocking signal materials such as plastic or glass, iPhone 4 leather case. That is why the previous iPhone is designed with a black plastic sheet at the top and bottom.

 The iPhone 5's supporting frame will use the chamfer polishing technology, iPhone 4g case, so it looks thinner. Meanwhile, the dock connector and speakers will be changed smaller, headphone port will be at the bottom.