I took my iPhone to the Apple Store and they put it in the back, they removed the screen, cleaned it and returned it to me. Is it difficult to clean the charging port and speaker at an Apple store? Clean your iPhone immediately if it comes into contact with contaminants that can cause stains, such as ink, dyes, makeup, dirt, food, oils and lotions. To clean your iPhone, disconnect all cables and turn it off. Use a soft, slightly damp, lint-free cloth.
Don't use window cleaners, household cleaners, compressed air, sprays, solvents, ammonia, or abrasive products to clean your iPhone unless you follow the instructions to disinfect it. The front glass surfaces have an oleophobic coating. To remove fingerprints, clean these surfaces with a soft, lint-free cloth. The ability of this coating to repel oil will decrease over time with normal use, and rubbing the screen with an abrasive material will further diminish its effect and could scratch the glass.
Don't use window cleaners, household cleaners, compressed air, sprays, solvents, ammonia, abrasives, or cleaners that contain hydrogen peroxide to clean your iPhone, unless you follow the instructions to disinfect it. In the case of the iPhone 15 Pro and iPhone 15 Pro Max, skin oil could temporarily alter the color of the outer strap.