I Baught a new Samsung Galaxy Active 2 smartwatch and I went swimming with my son although we are told they are waterproof to a certain extent. What's they don't explain is that thair only waterproof in fresh water so if you want to swimming in your local swimming pool then you can't use it you have to be swimming in a river or lake with fresh water for the warranty to cover it.. Now I was unaware of this now my in perfect condition watch has a mind of its own. Everything works perfectly but there are crack like marks under the screen but the screen in so cracked or discoloured from. Anyware. I just hope it can be repaired under the manufacturer warranty. 🤞
You could try rinsing the watch thoroughly in fresh water and then leave it to dry completely (maybe 24hrs). If the watch is still acting erratically then yes I would reach out to Samsung for a repair. Salt water can be corrosive but I'd of thought it would handle the likes of swimming baths etc.
Same with any smartphone manufacturer and watch manufacturer Chlorinated water and sea water will damage the products if they are regularly exposed to those elements. If the watch is not working correctly, it's worth contacting Customer Support, as you issue could just be coincidence it's happened when it has Personally, even with IP ratings. I still try and keep my tech away from water as best I can
