Ring replaced the hardware and it still doesn't work so for me it must be software related and the promise of a fix in the next update is not true. I have emailed my contact but have had no reply, suprise suprise....
this is how I made my speaker volume louder, it's not perfect but people can now hear me when I talk to them, someone else said about this idea (a previous reply in this post) but they didn't really clarify the proscess.
1) remove security screw from bottom of ring doorbell 2
2) remove fascia (normally black or silver)
3) look at the inside of the fascia and you will see a black sticker on your left and on your right, these stickers cover speaker vents (I assume it's to stop rain through speaker vents) peel these stickers off and reverse steps above.
my volume has definitely increased...........
*******I have included an image to show stickers *****
obviously you do this at your own risk and would probably void warranty .
I have had this audio problem for over a year now and it is present on all the Ring Doorbell 2 units that I have had (3 in total). I had given up on getting any satisfaction from Ring in being able to fix it and just used it without the ability to talk to a caller.
Yesterday I tried it again with my Galaxy S9+ and the usual low crackly and broken volume at the Doorbell and on my phone was still present. Out of curiousity I connected a set of wireless headphones with built in mic to the phone by bluetooth and immediately the audio on the phone and at the Doorbell was perfectly clear and loud enough for the caller to hear me even over background road traffic. When I disconncted the wireless headphones the audio returned to being broken, crackly and too low to be heard by the caller.
I haven't tried it with wired headphones but I suspect they will work as well. I wouldn't call this a Fix but rather a Work around that seems to work for me. Interested to see if it works for others with the same audio problems.