I know this is a few months old, but I was "googling" something related to your question and came across your post. I like the Samsung Dialer app and there are a few features that the google one doesn't have that I wanted to try (running the One UI beta, wanted to try the transcription call feature, its not in English but I wanted to use it for spam calls, for that its awesome!) The ONE THING that the Google Dialer app has that I absolutely love is the search feature. In the Samsung App, it only searches your contacts, but say you wanted to call the Chinese Food place for a delivery order. If you use the Google Dialer app, you just open it and click search and type in "Chinese food near me" or the name of the place and because it uses the Google Search it finds it even if its not in your contacts list. I use that feature ALL the time. Much faster than googling the the place, then either tapping the phone number or copying and pasting it into the dialer app. I happen to be looking to see if maybe Samsung was planning on adding that feature to their app, if they did it would be perfect. But for me, that is the one major thing that separates the two and I didn't see anyone else pointing that out, so thought I would contribute.