76• 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 boardsand 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, 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,before sending your device to a service facility.• To reset the device from time to time for optimum performance, power off the deviceand remove the battery.All of the above suggestions apply equally to your device, battery, charger, or any enhancement.If any device is not working properly, take it to the nearest authorized service facility for service.Additional safety information■ Operating environmentYour device and its enhancements may contain small parts. Keep them out of the reach ofsmall children.Remember to follow any special regulations in force in any area and always switch off yourdevice when its use is prohibited or when it may cause interference or danger. Use the deviceonly in its normal operating positions. This device meets RF exposure guidelines when usedeither in the normal use position against 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-wornoperation, it should not contain metal and should position the device the above-stateddistance from your body.To transmit data files or messages, this device requires a quality connection to the network.In some cases, transmission of data files or messages may be delayed until such a connection isavailable. Ensure the above separation distance instructions are followed until the transmissionis completed.