Acer V360 - Manual (Page 56)

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5. DO NOT use or store your smartphone in any location that is dusty, damp or wet.
6. DO use a soft, damp cloth to clean your smartphone. If the surface of the screen becomes
soiled, clean it with a soft cloth moistened with diluted window-cleaning solution.
7. DO NOT press down on the screen with force, otherwise you may crack the screen.