Samsung SGH-X640 - Manual (Page 69)

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Health and safety information
• Do not drop, knock, or shake the phone. Rough
handling can break internal circuit boards.
• Do not use harsh chemicals, cleaning solvents, or
strong detergents to clean the phone. Wipe it with a
soft cloth slightly dampened in a mild soap-and-water
solution.
• Do not paint the phone. Paint can clog the device’s
moving parts and prevent proper operation.
• Do not put the phone in or on heating devices, such as
a microwave oven, stove, or radiator. The phone may
explode when overheated.
• Use only the supplied or an approved replacement
antenna. Unauthorised antennas or modified
accessories may damage the phone and violate
regulations governing radio devices.
• If the phone, battery, charger, or any accessory is not
working properly, take it to your nearest qualified
service facility. The personnel there will assist you, and
if necessary, arrange for service.