No solvents! The outer lens of the screen is just soft plastic. Solvents like Windex may cloud or pit the surface. Microfiber cloths like a camera lens cloth or sunglasses cloth work well. I usually breathe on it to fog it a bit, then wipe it with a soft cloth, like a clean t-shirt, when it's smudged. When it's dry, I use the microfiber cloth.
and... not all paper towels are created equally. Some are quite soft and lintless and might be ok tho I wouldn't normally want to use one. Others are cheap, linty and almost rough, like a hand paper towel in a restroom. not something that should be touching your screen. Sometimes it's my shirt or pants that get the job, if they have the right softness quotient.
I only clean mine when its so dirty that I can't see it, hence hardly ever. When I need to clean it I use whatever is handy, just like any other cell phone I ever had.
I only clean mine when its so dirty that I can't see it, hence hardly ever. When I need to clean it I use whatever is handy, just like any other cell phone I ever had.