The biggest flaw in this device is the miserable processing. The device is absolutely not dustproof. Below the display is fine dust has accumulated between the camera lens and the protective cover is a thick layer of dust that blocks the view of the camera completely. The phone was quite normal in the host bags, carrying around pockets etc. This design flaw of the case is obvious when you "E51 dust" on Google looking for, you will find lush.
The only remedy is a fee-based cleaning in a service center, which will cost in my case 20.
Who is willing to endure the stigma of processing and who do not mind the dust under the display and front of the camera who gets a reliable mobile phone.