Cover for a display of an apparatus

1. A cover for an apparatus comprising:

a substrate defining the cover and having an exterior surface;

a layer over the exterior surface of the substrate;

a first portion of the substrate, underlying the layer, having a first composition and defining a first portion of the cover;

a second portion of the substrate, underlying the layer, having a second composition and defining a second portion of the cover;

wherein the first portion of the cover is substantially opaque in exterior ambient lighting and the whole of a part of the second portion of the cover is both translucent to backlighting and opaque in exterior ambient lighting, when the cover is attached to the apparatus and overlies a display of the apparatus, wherein the backlighting is lighting from the display of the apparatus.

2. The cover as claimed in claim 1 , wherein second portion of the cover optically diffuses the backlighting.

3. The cover as claimed in claim 1 , wherein layer provides for diffuse reflection of exterior ambient lighting.

4. The cover as claimed in claim 1 , configured to be user interchangeable with a cover attached to the apparatus.

5. An apparatus comprising a cover as claimed in claim 1 .

6. A user replaceable cover for user attachment to and user detachment from a flip part of an apparatus having a light emitting display, the cover comprising:

a substrate defining the cover and configured to engage with the flip part of the apparatus, the substrate having a first part, wherein the whole of the first part is configured to be translucent to backlighting and substantially opaque in exterior ambient lighting and configured to be positioned to overlie the display, wherein when the cover is attached to the flip part of the apparatus, an output of the display is visible through the cover, wherein the backlighting is lighting from the display of the apparatus.

7. The cover as claimed in claim 6 , configured to be user interchangeable with a cover attached to the apparatus.

8. An apparatus comprising a cover as claimed in claim 6 .

9. A cover for an apparatus having a light emitting display, the cover comprising:

a substrate defining the cover and configured to engage with the apparatus, the substrate having a first part configured to overlie the display, wherein when the cover is attached to the apparatus, an output of the display is visible through the cover, and

a layer that diffusely reflects light and extends over an exterior surface of the substrate, including an exterior surface of the first part of the substrate, wherein the whole of the first part of the substrate is both translucent to backlighting and opaque in exterior ambient lighting, when the cover is attached to the apparatus and overlies a display of the apparatus, wherein the backlighting is lighting from the display of the apparatus.

10. The cover as claimed in claim 9 , comprising:

a first portion of the substrate, underlying the layer, having a first composition and defining a first portion of the cover; and

a second portion of the substrate, underlying the layer, having a second composition and defining a second portion of the cover;

wherein the first portion of the cover and the second portion of: the cover are substantially opaque in exterior ambient lighting and the second portion of the cover is translucent to backlighting.

11. The cover as claimed in claim 9 , configured to be user interchangeable with a cover attached to the apparatus.

12. The cover as claimed in claim 9 , configured to be user attachable and user detachable from a flip part of the apparatus, wherein the flip part has a light emitting display, and the substrate is configured to engage with the flip part of the apparatus, such that when the cover is attached to the flip part of the apparatus, an output of the display is visible through the cover.

13. An apparatus comprising a cover as claimed in claim 9 .