My Galaxy Watch 3 causes a similar problem. I bought the watch in mid-August and by the first week in September, I had a rash on my wrist directly under the sensor in the back. The rash was shaped in a arc, somewhat like a half of a donut. I stopped wearing the watch, the rash resolved, I tried again, and the rash returned. I do not swim or shower with it on. I have a leather band but the rash is under the case, not the strap. I have only slept with it only once as I charge it overnight. My other watch is by a different company, has a stainless steel back, and does not cause a problem. QUESTION: Is there a coating or a film that would protect my wrist? Clear nail polish? Polyurethane? A resin? I love the features of the watch, but it is of little value if I can't wear it. My thanks in advance to Samsung for any improvement of their product.
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