Samsung watch 6 Camera Controller app
Camera Controller Missing on Galaxy Watch 6? Here's Why



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Unfortunately, it is not available for A series phones yet.
it is only compatible with S Series, Note Series and Z Fold/Flip devices,
so it won't work with your Galaxy A

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:
https://www.samsung.com/us/support/answer/ANS00084676/
https://eu.community.samsung.com/t5/...p/td-p/8204520