32• 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, andlight sensor lenses.• Use only the supplied or an approved replacement antenna. Unauthorized antennas,modifications, or attachments could damage the device and may violate regulationsgoverning 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 deviceand remove the battery.These suggestions apply equally to your device, battery, charger, or any enhancement. If anydevice is not working properly, take it to the nearest authorized service facility for service.Additional safety information■ Small childrenYour device and its enhancements may contain small parts. Keep them out of the reach ofsmall children.■ Operating environmentThis device meets RF exposure guidelines when used either in the normal use positionagainst the ear or when positioned at least 2.2 centimeters (7/8 inch) away from the body.When a carry case, belt clip, or holder is used for body-worn operation, it should not containmetal and should position the device the above-stated distance from your body. To transmitdata files or messages, this device requires a quality connection to the network. In somecases, transmission of data files or messages may be delayed until such a connection isavailable. Ensure the above separation distance instructions are followed until thetransmission is completed.Parts of the device are magnetic. Metallic materials may be attracted to the device. Do notplace credit cards or other magnetic storage media near the device, because informationstored on them may be erased.