That was the first thing I did - I read that article. I know it says don't use window cleaners, ammonia containing products etc. etc., but, as the constituents of "Woosh" are unknown, it is not clear to me whether or not this product is one of those that must not be used.
As the oleophobic coating wears on a new iPhone it becomes more difficult to clean the screen just using water. My question is will the use of e.g. Woosh further accellerate the loss of the oleophobic coating, or is it useful?
To put the question another way - is there anything other than pure water that is useful/safe to use to clean oleophobic coated screens?