Care and maintenance
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• 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.
• 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. 
Unauthorised 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.
• To reset the device from time to time for optimum performance, 
power off the device and remove the battery.
These suggestions apply equally to your device, battery, charger, or 
any enhancement. If any device is not working properly, take it to 
the nearest authorised service facility for service.