... default letter color :7, Parameters 2 for background color:1) ,Numerical range: 0-7: black, blue, red, green, blue, magenta, yellow, ... colorsExample: 123456 # 4 # 0 # 6 # (set the letters is black, and background is yellow),(4) screen clearingExample: 123456 # 1 # 1 # (no letter ... on screen,and the background of screen is blue)Note: when the device receive SMS ...