Silent ringtone sound

[GT-R]

The problem with the quiet sound of an incoming call. But
The sound of notifications and alarm clock is normal. And in the player itself, the established ringtone plays without problems.
Did:
- reset to factory settings
- start in safe mode
- software repair via Xperia Companion
New phone, updated from 6.0 to 8.0 android
Sony XZ (F8331) OS 41.3.A.2.192-R8E                                                                                     

Google translate

[GT-R]

1. false 

2. true 

In both cases, it sounds bad when an incoming call

[Uliwooly]

@GT-R 

Let's try again, the original question/issue you've stated that there was no sound at all, but there is with the preloaded ringtones correct? 

[GT-R]

There is a sound, but it is quiet with all ringtones