I have a Galaxy Watch that I really like but I have had this problem 2 times now.  The back fell off and I sent it in to be fixed.  Since I have had it back, I have been very careful not to get it wet just in case.  I have noticed when I sweat my watch seems to slide and I think that isn't good for the back/sensor.  It has come off again.  Is there a way I can fix this myself, as I am sure they will not fix it again, plus it takes a bit to send it in and get it fixed and I use it quite a bit.  I hope someone has a fix.   ... View more