Zte Optus X Start 4 User Manual page 59

 Keep the screen and camera lens clean. An unclean
screen or camera lens may slow down the phone's
reaction to your operations or interfere with the image
quality.
 Clean your phone and its accessories with a soft material
such as cleaning cloth for eyeglass lenses. Do not use
alcohol or other corrosive substances for cleaning or
allow them to get inside.
 Do not expose your phone or its accessories to open
flames or lit tobacco products.
 Do not expose your phone or its accessories to liquid,
moisture or high humidity.
 Do not drop, throw or try to bend your phone or its
accessories.
 Do not use harsh chemicals, cleaning solvents, or
aerosols to clean the phone or its accessories.
 Do not paint your phone or its accessories.
 Do not attempt to disassemble your phone or its
accessories. Only authorized personnel can do so.
 Do not place your phone inside or near heating
equipment or high-pressure containers, such as water
heaters, microwave ovens, or hot cooking utensils.
Otherwise, your phone may be damaged.
 Please check local regulations for disposal of electronic
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