Many of the bacteria on the smartphones we use every day can be infected. You need to clean your phone or re-clean it every time you come in contact with something unclean.
To clean, you must first unplug all the cables connected to the phone. Then remove the phone cover. Turn off the phone. Then apply a disinfectant containing 70% alcohol.
Clean the inside and outside of the phone. Make sure the phone and case are dry before replacing them. If no disinfectant is available, disconnect all cables connected to the telephone. Then remove the cover.
Wipe the phone hole thoroughly with a cloth to prevent water from seeping in. Make sure the phone does not get wet with a dry cloth. Wash the phone cover with soap and water. Rinse with water. The phone and case need to be left to dry before replacing the cover.