You will need
- A microfiber cloth with distilled water
Turn off the phone. Wipe the screen with a dry microfiber cloth without pressing.
Moisten a corner of the cloth in distilled water and squeeze well. Wipe with a damp part of the screen in a circular motion.
Flip the cloth and dry clean side once again wipe the screen. Do not try to wipe the screen dry, the water itself to evaporate, 1-2 minutes.
Dampen a microfiber cloth with warm, soapy water and rinse under running water. Leave the cloth to dry on a horizontal surface.
Do not use water from the tap, as you will spot.