Additional Information:
I had a lumia 1020. Volume was way too low even at 10/10.
My company actually bought me a new 1020. I was able to compare volume between the two, and it was night and day difference. The new phone was plenty loud at 10/10. In fact, I even turned it down to about 6/10, and it was still louder than my previous 1020.
Here's the thing. Over time, the new phone is now too low.
Either the ear-piece slowly degrades and the volume become too low
or
1 of the many software updates have nerfed the volume.
This is highly frustrating. If I'm not in a totally quite room, I am unable to hear ANY call. I either have to borrow someone else's phone, or use a bluetooth headset.
I haven't had a chance to factory reload my phone. I was wondering, anyone else has explored this area to see if the volume levels were impacted by this. If so, is there a way to restore them?