Can't receive incoming call alerts on Redmi Watch 4?

The incoming call reminder function is one of the default functions enabled by the product, please check whether the Mi Fitness App is running in the background (background process lock, background self-start, background high power consumption permission, etc., please check whether the permission is turned on or not by going to the [Mi Fitness] App >> [Device] >> [Incoming call reminder] >> enable [Incoming call reminder].