The call from Apple 1 1 was loud at first, and gradually decreased.

That's because the mobile phone has a gaze function. When turned on, the phone will automatically adjust the ringtone when it detects that the user is staring at the screen, and the ringtone will become smaller. The setting method is as follows:

1, first open the settings in the phone.

2. Find the accessibility features in the settings.

3. Choose facial recognition and gaze.

4. There is a gaze sensing function here, which will automatically sense the facial adjustment ringtone and does not need to be turned off.