How often should i be cleaning my phone to prevent getting sick from covid or the flu?

Recommend daily: cleaning. More often if in public. How to: Turn off phone & remove from case. You can use ready-made wipes that are safe for phones or make up a solution of ½ cup distilled water & ½ cup isopropyl alcohol in spray bottle. Gently mist a non-abrasive cloth & wipe down front & back of phone. Let sit for 15”. REF: https://health.clevelandclinic.org/sanitize-your-mobile-phone-with-these-helpful-tips/