I have had my galaxy Active 2 watch for almost 2 years and have been very pleased, however it has started to reboot every 10 minutes and is getting a cooling down message before shutting off. I have placed the watch in the freezer and tried rebooting and get he same cooling down message while booting up. It seems to be an internal software/firmware error. The only unusual this I did before experiencing this was to clear engage the water lock function. Afterwards the watch seemed to have rebooting issues and temperature issues. I have factory reset the watch, reloaded it bypassing all app upgrades and was able to get a successful reboot only to have it get a temperature cooling down message and shut off.