Hi I just purchased the Ear Bud Pros to use with my S20 Ultra.
I bought these over the lives for the noise cancelation,
However, I have noticed,
when noise cancelation is activated there is absolutely zero difference in sound versus having the noise controls set to "off".
Ambient Sound is very noticeable when the setting is activated however, like I mentioned, noise cancelation does absolutely nothing.
I hope this is a glitch that can be fixed otherwise I will be very upset as this was the only reason I bought these.
I don't think it's in the same level as over the ear noise cancelation headphones but it does drown out some sounds for me. The important thing is you have to make sure you create a good seal on the ear. What I find helps is after putting the headphones in the ears I pushed behind the earlobes a little bit and it move into position and seal the ears.