For the screen:
-Bausch & Lomb Sight Savers (wet wipes for glass and plastic lens)
-paper towel & windex
-microfiber cloth and spray (for eye glasses)!
For the back:
-a cotton shirt
But of course if you want to always keep is clean, you can buy a case & screen protectors ;)
Forum Rules - Recommended for new AndroidPIT members! Important to all community members: please read before posting