The first thing that should come to mind about cleaning a cell phone is removing the potentially deadly microbes and viruses that are covering your phone every day. Each time you touch your phone, you transfer bacteria to and from your hands, face, and every surface that the cell phone has touched.
Warning: Never use the following to clean your mobile.
Window or household cleaners
Aerosol spray cleaners
Harsh Solvents like acetone and benzene or paint thinner
Bleach and Amonia as they can remove the protective coatings.
It is essential to avoid excess moisture when cleaning, which can damage interior electronics. Most cell phone screens, especially smartphones' glass surfaces, have an oleophobic coating that repels oils from hands and fingers. The coating's effectiveness will lessen over time or be completely removed if you use abrasives or solvents.
What's best to use? RUBBING ALCOHOL
Step 1: TURN OFF YOUR PHONE AND REMOVE CASE AND ACCESSORIES
Step 2: Pour or Spray some Isopropyl Alcohol (70% or more) onto a clean cloth or folded paper towel. DO NOT pour solution directly on your phone. Make sure the cloth is NOT over saturated. Use a cotton swab to clean camera and tight areas.
Let the phone sit for a few minutes and then wipe clean with a dry cloth or paper towel.
Alcohol evaporates quickly, but you should let the phone sit for 10-15 minutes to make sure it's fully dry before turning it back on.
Step 3: Clean your case.
There's not much benefit to cleaning your cell phone if you are going to reinsert it into a dirty protective case. If made of silicone or plastic, it's probably safe to completely submerge your case in a warm soapy water and let it sit for a few minutes. Since clean and make sure it's completely dry before re-attaching to your phone. If your case is leather, clean it with a leather cleaner or switch to a plastic case for a week. Most viruses and bacteria can only survive on hard surfaces for a few days.