Use only a soft, lint-free cloth, like microfiber, to wipe away smudges. Abrasive materials, such as rough cloths, towels and paper towels, could scratch the glass and damage the oil-repelling coating ...

Mobile phones can act as a “trojan horse” for pathogenic microorganisms, according to the authors of one research paper about germs on cellphones.

Using the wrong products can damage the screen and protective coatings. Here's the safest way to clean your phone.