At the left side you can see the cover for the nokia handphone c7. It can protect the phone from drops and can protect the camera from scratches but it actually is not a good design. Take a look at the top of the phone
There is a earphone port at the middle of the phone, where the strap of the cover, that holds the 2 sides at the top. The strap will prevent the user from using the earphone when he or she is placing it in the pocket without leaving the strap open.
The designer can make a hole in the strap for the earphone port or the designer can make the straps at the side instead of the top.