Smudges

[keathkeath]

I recently noticed that the back of my black 830 has shiny smudges. I have tries using damp cloth to remove it. Can you suggest any other options for removing them?

 

[Chintan Gohel]

I recently noticed that the back of my black 830 has shiny smudges. I have tries using damp cloth to remove it. Can you suggest any other options for removing them?

The 830 has a polycarbonate cover or metallic?

 

[keathkeath]

It has a polycarbonate back cover