As gadgets and technology have advanced, so have the price tags that come with them. Unfortunately, more expensive gadgets inevitably mean more expensive fixes when they are broken.
Thus users take good care of their expensive gadgets; particularly iPhones, given their current popularity in the market. Often people buy cases for their phones. Here are the proper ways on cleaning iPhone cases.

:) iPhone case—silicone
To clean your silicone iPhone case, remove your iPhone from the case. Use a soft, slightly damp, lint-free cloth to wipe the outside and the inside of the iPhone case. Don’t use window cleaners, household cleaners, aerosol sprays, solvents, ammonia, abrasives, or cleaners containing hydrogen peroxide to clean the iPhone case.

:) iPhone case—leather
The leather iPhone case is made from natural leather. Its appearance will change as you use it. It might acquire a patina and might change color due to the oils from your skin and direct sunlight, further enhancing the natural look.
Cleaning the leather might affect its color. If you choose to clean this case, first remove it from your iPhone. Use a clean cloth with warm water and mild hand soap to gently clean the iPhone case. You can also use a mild cleaner along with a dry clean cloth. Leather cleaners and conditioners can change the color of leather.
Keep your iPhone case away from prolonged intense sunlight, heat, and humidity. Exposure to water, oil, makeup, and dyed materials (such as denim) can stain tanned leathers.

iPhone Smart Battery Case
To clean your Smart Battery Case, remove your iPhone from the case. Use a soft, slightly damp, lint-free cloth to wipe the outside of the case. Don’t use window cleaners, household cleaners, aerosol sprays, solvents, ammonia, abrasives, or cleaners containing hydrogen peroxide to clean the case.
When cleaning the internal Lightning connector, use a soft, dry, lint-free cloth, and don’t use liquids or cleaning products.