Care and maintenance
88
• 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.
• 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.