most effective way is clinical isolation methods . forget everything
ionized disinfection method to avoid water damage ( this can be done at home with a little knowledge about it )
You can use a small salt sodium etc which always there in your kitchens. method is too easy , any one who do school science practical they can do IONIZED DISINFECTION to electronic device
remember there are different type of ionized method . some used to disinfect water , i am not talking about that water disinfection ionization method, its for electronic equipments
apart from that method you can use other methods such as
Chlorination, ozone, ultraviolet light, and chloramines are primary methods for disinfection
most safe method is use of UV , harsh chemical ( as mentioned) with high air pressure for few minutes and oleophobic (oil repelling) coating
use DISINFECTION WIPES ( 70% isopropyle dilution ) developed by apple or samsung which never spray directly into smartphones but it disinfect everything
as per CDC recommendations never use fabric and lather based cover and cases to avoid high risk of infections
