Why does the POCO M7 Pro 5G screen not turn off during a call?

Thank you for your support of Xiaomi products. The POCO M7 Pro 5G utilizes a unique method for distance sensing that is achieved through the touch screen. To ensure optimal performance during phone calls, it is recommended that you keep the upper third of the phone screen close to your face. This positioning allows the screen to accurately detect proximity and automatically turn off the display while you are on a call. This helps prevent accidental touches and saves battery. Please follow this usage tip to enhance your overall calling experience.