Siemens U15 - Manual (Page 168)

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Care and maintenance
Your phone has been designed and crafted with great care and
attention and should also be treated with care. The suggestions
below will help you to enjoy your phone for many years.
• Protect your phone from moisture and humidity! Precipitation,
humidity and liquids contain minerals that will corrode
electronic circuits. Nevertheless, should your phone become
wet, disconnect it immediately from the power supply and
remove the battery!
• Do not use or store the phone in dusty, dirty areas. Its moving
parts may become damaged.
• Do not store your phone in hot areas. High temperatures can
shorten the life of electronic devices, damage batteries and
warp or melt certain plastics.
• Do not store your phone in cold areas. When the phone
warms up again (to its normal ambient temperature), moisture
can form inside the phone, which may damage electronic
circuit boards.
• Do not drop, knock or shake your phone. Rough handling can
damage internal circuit boards!
• Do not use harsh chemicals, cleaning solvents, or strong
detergents to clean the phone!
The suggestions given above apply equally to your phone, battery,
charger and all accessories. If any of these parts are not working
properly, take them to your nearest qualified service outlet. The
personnel there will assist you and, if necessary, repair the device.