<human>:  How do I clean a smartphone's screen without damaging it?
<bot>: To clean a smartphone's screen without damaging it, you should wipe it down gently with a slightly damp, microfiber cloth. You should also avoid using any harsh detergents, solvents, or abrasive cleaning materials. Using a very mild soap and lukewarm water may help if necessary. To avoid scratching the screen, do not press too hard while cleaning it, and make sure the cloth is free of dirt or other particles.