I am introducing myself as a satisfied Samsung user until my first smartwatch. I bought the 40mm Active 2 and it started attacking my skin in about 10 days. I switched arms and the same burn sshowed up on both arms. I wa sleeping in it, wearing it all day etc. Just taking it off for showering and charging.
I switched from the Fitbit Versa because it did not have the features I wanted. I am documenting this before I go off on Sprint to get out of my lease.