Cell phone cases can accumulate dirt, soot and bacteria, so it's important to clean them regularly. Lucky for you, in most cases, a simple cleaning with water and detergent will be enough to sanitize the product. If you want a deeper cleaning, you can use baking soda to remove stains and alcohol to eliminate germs. After this process, your cell phone cover will be brand new!
Steps
Method 1 of 3: Cleaning with Detergent

Step 1. Remove the phone case
Never try to clean it together with the phone, as water could get inside the phone and damage the electronics. Keep your cell phone away from water.
If your case has a plastic component and a silicone component, separate the two parts. Remove the flexible silicone piece from the hard plastic piece that is on the outside of the hood

Step 2. Mix 250ml of warm water and a drop of detergent in a bowl
Do not use more than one drop so that the mixture does not foam too much.

Step 3. Soak the bristles of a new, clean toothbrush in soapy water
If you don't have a new brush, use a clean cloth.

Step 4. Scrub the cover surface with the toothbrush
Use circular motions or back and forth, passing it through all the hardest-to-reach corners. You must clean both the outside and the inside of the hood.

Step 5. Rinse the cover and dry it with a soft cloth
Place the cap under a tap running water so that all detergent foam is removed. Then use a soft cloth to dry it in order to prevent scratches.

Step 6. Allow to air dry for at least an hour
Don't be in a hurry and just put your phone back in the case, because even if it's apparently dry, there may still be water remnants on it that can damage your phone. After an hour, you can put your phone in the clean, dry case.
Clean the case with water and detergent whenever it looks dirty or has visible stains
Method 2 of 3: Disinfecting the hood

Step 1. Remove the phone case
Do not try to disinfect it together with your cell phone, as the disinfectant product could get inside it and damage it. If the cover has several parts, separate them.

Step 2. Moisten a soft cloth with alcohol
Use isopropyl alcohol at a concentration of 70% or higher. If your product is in a spray bottle, you can spray it directly on the cover.

Step 3. Clean the hood with the damp cloth
Pass the fabric on all parts of the cape, both inside and outside it.

Step 4. Remove the alcohol with a soft, dry cloth
Try to get as much alcohol as possible. The cover should be dry when you're done.

Step 5. Wait an hour before putting the phone back in the case
Leave it somewhere safe to air dry for an hour. After that time, put the phone inside it again.
Get into the habit of disinfecting your phone at least once a month so that it remains germ free at all times
Method 3 of 3: Removing Tough Stains

Step 1. Remove your cell phone from the case
Whenever you are going to clean the case with a liquid, you must remove the cell phone from inside it so that it is not damaged. If it is made up of several pieces, detach the inside from the outside before starting cleaning.

Step 2. Pour baking soda over the stain
You won't need a large amount, just enough to cover the entire surface of the stain you are trying to remove. Any kind of baking soda will work.

Step 3. Rub the baking soda into the stain using a wet toothbrush, moving back and forth
Continue rubbing until the stain is completely removed.
You may not be able to remove all stains with baking soda alone. If the stain isn't disappearing after rubbing it for a while, you'll need to use an even stronger stain remover

Step 4. Rinse the cover and dry it with a soft cloth
After rinsing it under running water and removing excess water, let it dry for at least an hour. After that time, you can put your phone inside it again.