Why doesn't the Xiaomi 15T Pro screen turn off during calls with a screen protector?

Question

Accepted Answer

Thank you for your support of Xiaomi. On the Xiaomi 15T Pro, the screen can remain on during calls when a non-official screen protector is applied. Some third-party screen protectors interfere with the proximity sensor, preventing the phone from accurately detecting when it is held near the ear.
This is normal and reflects the sensor's sensitivity to external materials, not a device malfunction. When the sensor is obstructed, the automatic screen-on/off function during calls does not work as intended, potentially causing accidental touches.
To restore proper operation, it is recommended to use an official Xiaomi screen protector or temporarily remove the existing one. Keeping the proximity sensor unobstructed ensures accurate detection during calls, allows the screen to turn off automatically, and maintains a smooth and reliable calling experience.