The Xiaomi 14 uses an in-screen proximity sensor. In scenarios such as making phone calls or using third-party APPs for voice calls, you can notice faint bright spots through the screen. This is a normal phenomenon and not a product quality issue. Please feel free to use it.
The faint bright spots on the screen are residual images caused by the prolonged operation of the proximity sensor. They will gradually diminish and disappear on their own after some time of usage. This is not a product quality issue and will not affect your normal usage.