Yeah! Same Issue here!! Suddenly my bottom speaker stopped working!!
I have the same problem. Last night, my phone worked normally. This morning I got up and the speakers on the phone no longer work. Not the ringing, nor when I want to talk to someone. The "Ring volume" menu is increased almost to the end but is in gray (disabled).
How to start this speaker test? From where to find or download?
From where to find this code from Nokia team? Any link or more info?
Does only the speaker bottom is not working?
Thank you very much
Suggestion 1: Wipe cache partition by accessing your phone's Recovery Mode: https://forum.xda-developers.com/nokia-6/help/nokia-6-ota-update-ddls-t3721424/post75669145#post75669145
Suggestion 2: Factory data reset: https://www.nokia.com/en_int/phones/support/nokia-6-user-guide/reset-your-phone
Suggestion 3: Contact your local Nokia Care Center for repair: https://www.nokia.com/en_int/phones/support/care-center-locator
A rep had me Clear the cache of the Google Play Services and it worked. Instructions below.
Settings > Apps & notifications > App info > Google Play services > Storage > CLEAR CACHE.
After that, do the same for...
Settings > Apps & notifications > App info > SETTINGS > Storage > CLEAR CACHE.
Once you've done that, simultaneously hold the Power and Volume Up button for 10-15 seconds.
The phone DOES NOT hard reset and NO data is lost.
I had the same issue. Suddenly, no more sound on speaker. To get it back working I had to shutdown the phone completely and restart it. I had tried a Restart only but that did not fix the problem, only a Shutdown (power off) and power it back on make the speaker work again.