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I agree we need to be able to rotate the screen for how we wear the watch. It is crazy that the screen will rotate when on charger but not when its on your wrist. So the software is there so don't make us have to go buy a new watch just do this. I have been a long Samsung person and my phone have been your flagship so don't make me reconsider my brand!
Apple watch has this capability and even though I am not a major fan of iOS - a good deal of their intuitive features, both on their phones and watches lead the example of how User interface should be. This feature, being one of the first that should already be on Samsung watches, especially considering they are in the top 3 global smartwatch brands.
All that to say, I also agree.