Yesterday I found out that Jolla is not really a seaworthy phone. Had a little sailing trip with Jolla packed to a "waterproof" map pouch. Weather was a little bit rough and a fair amount of water came into our boat. Obviously I hadn't closed that map pouch properly so I ended up with Jolla swimming in the map pouch.

Looks like Jolla still boots, but gives strange errors, like "battery temperature too low". Better to let it dry for few days and the try again..