To set the LED light of Apple 5S, perform the following steps: Step 1: Click the \"Settings\" icon on the desktop. Step 2: Open \"General\" and select \"Auxiliary Settings\". Step 3: Turn on the \"LED flashing for reminder\" option. LED is the abbreviation of English lightemittingdiode (lightemittingdiode), its basic structure is an electroluminescent semiconductor material chip, solidified with silver glue or white glue to the bracket, and then connected with silver or gold wire chip and circuit board, and then sealed with epoxy resin around to protect the internal core wire, and finally installed the shell. So the seismic performance of LED lights is good. The application field involves mobile phones, lamps, household appliances and other daily household appliances and machinery production.