Turn off the phone and remove the case
Wipe the back with a soft microfiber cloth
Dampen the cloth slightly with water
Use a small amount of mild soap on the cloth for stubborn dirt
Gently rub the stained area
Use isopropyl alcohol on a cloth for grease or ink stains
Avoid soaking the phone or using excess liquid
Use a soft toothbrush for textured areas
Dry the back completely with a clean cloth
Repeat the process if needed
Avoid bleach, acetone, and harsh cleaners
Keep the phone in a clean case to prevent future stains