Out of nowhere my samsung s9+ plus will all of a sudden say "hello?" In a childs voice without me doing anything to it at all and I don't have that word set on a notification sound!
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I found that MS Outlook's notification sounds had gotten changed during an upgrade or something. Nice Catch kept showing an Outlook action whenever the accursed voice happened. So, I went to the Outlook settings and drilled down to Notification sounds and found the "hello" was checked instead of the standard sound.