09-08-2019 09:59 PM
I have tried swapping over to exclusively native ringtones with no change in the results. I have not tried swapping all notification sounds to their defaults yet, but I believe that there have been reports that using only the defaults does not avoid the problem.
09-10-2019 12:55 PM
In your case, is it only not ringing when you receive phone calls? How about receiving notifications? The only thing I could think of is resetting apps preferences (Settings > System > Reset > Rest App Preferences). If this has been observed only with phone calls, try clearing the Phone app's storage (Settings > Apps > Phone > Storage > Clear Cache and Clear Data).
I would also recommend setting a ringtone for each contact (Contact > Select the contact > Tap 3 vertical dots located at the upper right part > Set Ringtone)
Let me know which helps. Thanks.
09-10-2019 09:45 PM
But it's not a fix to reset app preferences and it's not a fix to set a ringtone for each of my 1000 contacts.
However I did what I said I would do. I disabled all Motorola pre installed apps - wish I could uninstall them altogether. But I've had no issues since.