I had an issue with my Samsung smartphone (xcover 5). When I received incoming calls it would simply not ring. I was really upset.
The phone would change to mute during the call ring and if I answered and them unmute after.
I found no option to fix this issue.
I uninstalled the phone app I used for years (Simpler
phone). Still didn't help.
I read something in a forum about clearing cache to the default Samsung phone app.
Also about going to default app permissions and in 'Calls and spam' to select 'none'. (Didn't help yet).
I choose the ringtone inside the settings at the samsung phone app. I selected the option for incoming calls numbers or names to be read at loud.
It worked finally.
Now I always ear the incoming call ringtone.
I think the major procedure was to select the ringtone inside the samsung phone app. Not a great app but it is life.
I’m not a Samsung fan... Xiaomi is better but I wanted a 5.4" phone and not a "tablet" for everyday use.
The phone has android 12 and one ui 4.1.
I didn't install again the Simpler phone app because it started blocking all calls without reason and it was making me upset.