What should I do if the Redmi Watch 4 is not sensitive to lifting the wrist and lighting up the screen?

The function works by relying on the accelerometer sensor inside the watch. You can wake up the screen by tilting your wrist such as flipping and lifting your wrist. However, if the angle of turning your wrist is too small and the speed is too slow it may lead to the problem of not being able to light up the screen.