Not exactly - I have EP 10s. The app was upgraded to handle the EP20s but still was highly annoying with the EP10s. The problem with Android was/is unpredictability - works most of the time, but 20-30% of the taps fail. What I particularly hate is that I often want to mute the TV streamer, and too often it mutes only one HA. That’s not a problem if you don’t want to mute the aids very often.
My bet is that the problem is in the app and relative lack of responsiveness of the Samsung screen. Pixel may be better. My wife’s iphone SE 2nd version almost always worked fine when I used it for testing, so my choice was between an iphone that I knew worked well enough and an unknown Pixel, so I went over to the dark side. And it IS the dark side - the Samsung is better in every respect I use the phone for except for controlling my HAs.
I don’t know what constitutes ‘hands-free’ with HAs. Most of the time, people hear me well enough when I use the EP 10s mics, with the phone beside me, but I still have to use the phone itself to answer a call or to hang up. I believe Phonaks allow answering and ending a call by tapping a switch on the HA, which is a lot closer the hands-free, IMO,