What's wrong with Xiaomi 4' s mobile phone receiving notification or missing incoming call information?

There are two reasons why the breathing light of Xiaomi 4 mobile phone doesn't light up after receiving the notification or not receiving the incoming call information: the breathing light prompt is not turned on, and the LED light is damaged.

The solution to the problem that Xiaomi 4 mobile phone does not light up when receiving the notice or does not receive the incoming call information is as follows:

First, the breathing light prompt function is not turned on.

1. Click to enter. Desktop Settings icon:

2. Select "Other Advanced Settings":

3. Select the "breathing light" option:

4. Open the breathing light prompt function:

Second, if all the above methods fail, it may be damaged in breathing light and should be sent for after-sales maintenance.