Nokia 7390

Page 102
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C a r e   a n d   m a i n t e n a n c e
102
Care and maintenance
Your device is a product of superior design and craftsmanship and should be 
treated with care. The suggestions below will help you protect your warranty 
coverage.
• Keep the device dry. Precipitation, humidity and all types of liquids or 
moisture can contain minerals that will corrode electronic circuits. If your 
device does get wet, remove the battery and allow the device to dry 
completely before replacing it.
• Do not use or store the device in dusty, dirty areas. Its moving parts and 
electronic components can be damaged.
• Do not store the device in hot areas. High temperatures can shorten the 
life of electronic devices, damage batteries, and warp or melt certain 
plastics.
• Do not store the device in cold areas. When the device returns to its 
normal temperature, moisture can form inside the device and damage 
electronic circuit boards.
• Do not attempt to open the device other than as instructed in this guide.
• Do not drop, knock, or shake the device. Rough handling can break 
internal circuit boards and fine mechanics.
• Do not use harsh chemicals, cleaning solvents, or strong detergents to 
clean the device.
• Do not paint the device. Paint can clog the moving parts and prevent 
proper operation.
• Do not touch the main display with hard or angular materials. Objects like 
earrings or jewellery may scratch the display.
• Use a soft, clean, dry cloth to clean any lenses (such as camera, proximity 
sensor, and light sensor lenses).
• Use only the supplied or an approved replacement antenna. Unauthorized 
antennas, modifications, or attachments could damage the device and may 
violate regulations governing radio devices.
• Use chargers indoors.
• Always create a backup of data you want to keep (such as contacts and 
calendar notes) before sending your device to a service facility.
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