I used my iPhone 6S in the rain today. Although I could wipe off the water completely only sometime later, I don't see any damage as everything works fine, including the touch, speakers and the jack. However, I'm quite a paranoid person so I'm worried if there's actually any internal liquid damage. Is there any way to check for that at home? Also, although the 6S isn't certified water resistant, can it be used it the rain?