With built-in chip of the phone case, the case starts to light up once there is induction, and 5S later it automatically stops after the screen light is off. Low power consumption and long endurance. When touching the screen or there is incoming call or app push, etc, the phone case will automatically light up. The phone case light will goes out after the screen light is off. If there is an app running in the background, it will delay in lighting off. If the mobile phone’s Bluetooth is always on, it may cause the mobile phone case to constantly light up. With ultra-energy-saving LED light source, the phone case has extremely low power consumption and long endurance. Smart lighting up, the phone case lights up when there is coming calls, messages, APP push.