Wipe down the cable with a dry, tender, and lint-free cloth. You can also dampen a delicate cloth or cotton swab with a little level of isopropyl alcohol. You might have to wipe down the screen a next time with extra isopropyl alcohol right before your screen is totally clean. https://troyzvogw.theideasblog.com/27163244/considerations-to-know-about-cell-phone-charging-port-cleaner