A perfect fit for all the controls of the iphone 5
1.Turn on the power swicth,the system to detect the hardware and the backlight will have flash light. 2.When connect with the iphone 5,Press the pairing button the backlingt turnbe light automatically. In the process of connection,if the backlight be shutdown,can press the pairing button turn on the backlight again. 3.After conntect with iphone5 ,press any key can turn on the backlight;More than 10 second, without any key press of words, the blacklight be shutlight be shutdown automatically. 4. Text input state,suggest using FN keys to turn on the backlight.