So, how do you clean it? I've read on the apple web page that it's not good to clean it with alcohol(why?) or with something for cleaning windows. Anyone has hes own method? Except with the cloth that came with it.

I just wipe the screen on my shirt or my pants. It's very durable and does not scratch easily at all.

I just use window cleaner.

I just use the clothe that came with it

Breathe hot air on it and wipe it off while it's still foggy. That removes anything that won't come off with a simple wipe.

When the supplied cloth doesn't work "as is", I use it after having soaked it a bit (the cloth not the iPhone ). I use cold water and squeeze it out before using it on the phone.

There's no need to apply much pressure on the damp cloth so there's no need to worry about water ending up in the openings.