I use a good microfiber cloths and drip some rubbing alcohol onto the microfiber. Then I wipe down my phone and then I ‘polish’ the glass by using another microfiber sprayed lightly with Invisible Glass. It’s a great glass cleaner, and i wipe down the front and back and use another part of that same microfiber that’s drier, and buff any residue till the glass is clean and not showing any haze. Done this for years and it definitely has worked well for me.