#1 will work for surface cleaning but obviously not germs. #2 Clorox wipes do not actually use bleach. (FYI) but would probably would work best at streaking your screen (though it would also probably kill germs too) #3 Alcohol is relatively safe and will kill germs, but I would use something like cotton swabs (or microfiber) for two reasons, one because you don't want to leave behind paper towel fibers all over and 2 you don't want whatever you use to "drip" excess onto (or into) the device. #4 NO! NO! NO! NO! Do not use Hydrogen Peroxide. Oxygen has a known corrosive effect on ferrous metals. #5 No comment - I have no idea. #6 I have my doubts. #7 Not if you like your phone!