FDA’s Amy Lando and Michael Bazaco say the most important thing is that consumers recognize their device may be a potential source of contamination and treat it accordingly.
It is best to minimize contact with the phone or other device while cooking, and wash hands regularly during the cooking process.
And the researchers recommend that, in general, consumers always follow the core four steps for practicing food safety in the kitchen.
Consumers can find more information on FDA’s Safe Food Handling web page. Another resource is https://www.foodsafety.gov/.