I use micro cloth or high performance cloth to clean any glass embedded with electronics, best way to go
Well yes, but this doesn't do much to remove grease from the screen. Like I said, I use a SMALL amount of window cleaner on a cloth (ammonia free) - aside from smelling slightly different, the ingredients are exactly the same as that high priced "LCD cleaner" they sell. It works well on all of my portable devices, my TV, and my computer monitors.
I have never had a problem.