Hey , M also facing the same issue. All sounds like alarm,media,call speaker, gmaps audio everything plays in ear speaker instead of external speaker. Restarting my phones will fix the issue for sometime, but somehow its ends up playing in ear speaker. And today morning my alarm ditched me nd when I tried to change some alarm tone I saw this error "unable to play during call", only then I figured this issue is still flowing across samsungs 'S' series. S6 had a similar issue and there was an update i hope. I also had few soft sip phone apps like zoiper, portsip which I uninstalled and wiped out phone cache and seems to be working for few hours now. I hope it lasts!
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