An excellent awareness article by USA Today … Bacteria, viruses, and other germs can accumulate over time for smartphones, as noted in this awareness article on need to clean items where there is constant daily contact

Apple advises against using liquids or disinfectants on its devices. Instead, the iPhone maker offers a detailed list of how to clean your phone depending on the model that you have.  Motorola suggests using a microfiber cloth — the kind you might clean your glasses with — with a little water.

There are other ways you can safely clean your device depending on the type of phone you have. You may need the following materials:

  1. Microfiber cloth
  2. Isopropyl rubbing alcohol
  3. Water
  4. Cotton swabs
  5. Cleaning gloves