How do you clean your phone?

Diet coke, of course. Cleans all kinds of glass. Apply sparingly with a microfiber cloth. Liquid evaporates after cleaning. Then polish w/a dry microfiber cloth. Note: must be diet--you don't want to be putting sticky sugar residue all over your screen. Also, must be coke, not Pepsi or some other random diet soda. Generally speaking these don't work.
 
..., just make sure to check the ingredients, as many manufacturers will feel no remorse in stamping an alcohol-based detergent as mobile-friendly. Also, applying the detergent to the rag, rather than spraying it directly on the screen, is a good idea.

Have you ever seen ingredients listed on those things? I haven't... :-)