This also happened to me! I noticed the heart rate cover falling off while working out. I immediately stopped wearing it in fear of water damage from my sweat. Called up samsung. After trying to explain to them what happened( which I'm sure they still misunderstood) they opened a ticket. They warned me that if the tech ends up demeaning it physically damaged, that my warranty will not cover it. Judging from everything I've read from the comments, there is no hope that I wouldn't have to pay. This will definitely be my last samsung device.
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