IOS 14.3 ringer volume issue Iphone XR

Please see this discussion: https://discussions.apple.com/thread/250694412. It seems they found way to solve it.

An update (same iPhone 11 on iOS 14.3). I have realized Whatsapp is involved with this volume increase issue as well. So now I have multiple triggers causing an automatic INCREASE in volume from, say, 20% (where I tend to use it) to maybe 95% (house shaking level).

1. The insertion of wired Apple brand headphones into the a lightening jack - immediate vol increase. I manually reduce it.
2. Hanging up a Whatsapp call (above wired headphone connected before call comes in and still connected when call is terminated) - immediate vol increase. I manually reduce it. (Also, I noticed that the speaker phone indicator is 'on' when I am on a whatsapp call using the headphones - I think this is new since the 14.3 update)

Volume increase remains systemic - all alerts, ringers, etc.

Any thoughts?

I found what I think might be the issue. When I'm noticing it happen it's after I connected to my vehicles Bluetooth. And when getting out of my truck it is sometimes not resetting back to my previous low volume.

Hi I have the same issue on my iPhone 11 and only since updating to iOS 14.3 last week.

My wake up alarm appears to reset to itself high volume - I know because I have always set the alarm on the first volume setting above zero. The volume increase plays through to volume strength for all alerts. When locked, I get high volume alerts from Whatsapp, Calendar, Newspaper app, etc messages coming into my phone. When I open Whatsapp and go to its app settings to reset the volume they appear low as originally set. Its infuriating.

Today I discovered that when I insert lighting jack wired headphones it triggers a volume increase - every time. I dont know why. This may be the cause of all volume increases - still unclear at the moment.

Please help!

Have the same exact issue with my 11pro. Can't find any help. only happened after 14.3 update

iphone XR .. Since I upgraded ios 14.3, when I call the receiver will hear my voice is a bit too small .. I hope ios can update this thing as soon as possible .. thank you

Same problem with my phone, and it started after the 14.3 update. I find it rather annoying, especially when I am in a room with other people around (at work, for instance).

Our problem is a volume INCREASE, not a decrease. Thank you.