“Aluminum as the main frame material is a bit unusual. It is used for the back cover and the band around the screen, while the lower part of the frame is made of plastic. At first sight the assembly quality is fine, there are no complaints here. You can enjoy the feel of a well-crafted phone in your hand, it boasts a smooth slide mechanism, so opening and closing the phone is just a breeze. On a negative side, the head top has microUSB port cover near the back cover latch. I don’t know the reason for the loose cover near the head top, but it lets in dust. After a couple of days in my pocket the phone became so dusty as if it had been to a garbage bag. Eventually dust will get into other parts of the phone and it is a serious drawback.” Read more here: