Be sure to verify the size you want/needs is in stock before ordering. Connecting the connection jack in the case to your phone will light up and turn off for a short time. It recognized your cell phone. And when you get a phone call or a message, it shines and lets you know. It shines even if you press certain buttons or impact on the case. It glows as seven colors change. All of this is done automatically. You can't adjust. You can remove the connecting jack and use it as a normal case when you want. It's a great case just with the design. If the phone's Bluetooth is always on, the phone case may be on. Smart IC chip, ultra-energy-saving LED light source, very low power consumption, does not affect battery life. After the lock screen is in standby, it will automatically turn off in about 10 seconds. Precautions for Detaching Case There is a risk of breaking the glass if it is bent and detached like a normal case with the rear made of tempered glass. Place your finger in the hole of the camera, hold the case rim, and slide it out to make it easy to detach. Please be careful of product damage caused by carelessness. If the cell phone is impacted, the sensor may not work and the light may not be working anymore. We're aiming to provide each customer with the highest standard of customer service. If, for any reason, you're not satisfied with our Upgraded iPhone Case, simply contact us, we will take care of all quality-related issues with a REPLACEMENT or REFUND Reminder: If you don't want the phone case to glow, just unplug the connector of the phone case from the phone.Note: Because there are many mobile phone models, and not every model has a picture of a mobile phone case, so the pictures are unified, but please rest assured that which model you buy is which model of mobile phone case